Fitting new stereo

Elythador · 09-08-2008, 01:05 PM

My new stereo power input is a different to the original, my store doesn't do a conversion. Should I just snip the wires and bind them with inulation tape?

muffinman · 09-08-2008, 01:27 PM

Quote:

Originally Posted by Elythador

My new stereo power input is a different to the original, my store doesn't do a conversion. Should I just snip the wires and bind them with inulation tape?

Why don't you just buy a harness adapter it's much easier than cutting your harness and easier to go back to stock if need be.

honda_bar · 09-08-2008, 07:40 PM

trust me, do that! ^

mr2stealth · 09-08-2008, 07:43 PM

dont cut them! i learned the hard way, just get a wire harness, circuit city should have them...if not, anywhere that installs stereos should. getting the harness is way cheaper than what i went through. good thing im friends with the guy who installed my stereo after i cut the wires.

Elythador · 09-09-2008, 01:21 PM

Quote:

Originally Posted by mr2stealth

dont cut them! i learned the hard way, just get a wire harness, circuit city should have them...if not, anywhere that installs stereos should. getting the harness is way cheaper than what i went through. good thing im friends with the guy who installed my stereo after i cut the wires.

I don't know what type is compatible. Not sure if it will be very cheap from circuit city, I live in UK

honda_bar · 09-09-2008, 07:19 PM

I don't think that it would differ much in price from an electronics store and a place that installs/sells stereo equipment. Just ask for a 199X mr2 wire harness. Should be around 10 pounds...

Luni · 09-09-2008, 09:21 PM

If you cant adapt with a harness, and must cut, it isnt a big deal.

Its an old car that came with a crappy head unit in the beginning. Mines cut, no big deal.

Elythador · 09-10-2008, 11:37 AM

I've been to the audio specialist. They don't have a harness, they say the only way it can be done is to link it straight to the amp. Haven't got a clue how to o that. I'm getting pissed off, I just want to listen to some music dammit!

deucesquared · 09-11-2008, 10:06 AM

Stupid question from an American but can't you purchase the harness from circuit city or best buy online and have them ship it to you? It might be more than you want to pay but if you cant get it locally it would seem to be worth it to me.

Luni · 09-11-2008, 02:06 PM

If the car has premium sound, just have them bypass the stock amplifier, and run new wires. Or do it yourself.

It really isnt that hard, theres plenty of info around on how to do it.

The stock harness is only really important to you if you plan on putting the stock stereo back in at a given time.

Elythador · 09-12-2008, 06:04 AM

I've had a look online but I find it impossible to see which is the right one.

myrezi · 09-12-2008, 08:08 AM

depends on how much sound you looking for. In all my cars i have snipped and run the wires to my amp or deck. You not going to go back to the factory crappy radio.

i would find a wiring diagram online for your model and its really easy..with a testy light or volt meter you good to go.

lots of info on the net

good luck

Elythador · 09-12-2008, 06:51 PM

Quote:

Originally Posted by myrezi

depends on how much sound you looking for. In all my cars i have snipped and run the wires to my amp or deck. You not going to go back to the factory crappy radio.

i would find a wiring diagram online for your model and its really easy..with a testy light or volt meter you good to go.

lots of info on the net

good luck

What do you do with the original bulk of wires and harness that came out of the factory?

I can't find any decent tutorials on the net for wiring the radio to the amp. Wouldn't I need to by loads of new wires to do it anyway? May as well try to get a harness...if only I new which one. I know nothing about electrics and it isn't simple for me.

Elythador · 09-13-2008, 06:11 AM

[IMG]

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I must be boring you but I think I have found the right harness here - Toyota MR2 wiring adaptor - Autoleads PC9-411

The problem is if you look at the photos (that is the lead that came with the new stereo. It has two slots to be connected to the car, whereas the harness only has one to plug in, the two slots that plug together also have different colour wires. Do I need to plug in both slots? Thanks

Would the wires that came with the new stereo be the same colour codes as the bunch of wires in the harness that came out of the factory unit? If they have always been standard codes for all cars then maybe snipping them together would be the best option. A quick responce would be much apreciated, thanks again

Elythador · 09-15-2008, 10:00 AM

Come on, help me out guys

GINA2MR2 · 09-23-2008, 06:19 PM

cutting the MR2s harness is the stupidest thing you can ever do. mine was cut to run an amp for the speakers and separate amp for the sub.. behind the stereo is looks like a cluster 'F' it was a real B to put in a different deck and now that the wires are all different colors it impossible to know what you doing when you hook it up.
get a harnness

Luni · 09-23-2008, 08:40 PM

It isnt that hard.

Use a multimeter to find power and ground, and use a 9v battery to find the speaker wires.

It would take me 10 minutes to map out that harness.

MR2 Drifter · 09-23-2008, 11:10 PM

Quote:

Originally Posted by Luni

It isnt that hard.

Use a multimeter to find power and ground, and use a 9v battery to find the speaker wires.

It would take me 10 minutes to map out that harness.

When I bought my car it didn't have a radio so I just decided I was going to go back to the stock radio, I ordered it and I ordered the harness but the colors are different

so can you explain what to do with the 9v battery to map out the harness? After that I can go hook it up tomorrow

GINA2MR2 · 09-23-2008, 11:24 PM

i try to get a pict to you..

yay for mickey shore

Luni · 09-24-2008, 02:22 AM

Well, In the harness you have the following:

12v constant
12v switched
ground
12v illumination
illumination ground (from the dimmer switch)
front right
front left
rear right
rear left

OR you have the above power wires, then preamp signal wires to the stock amp, and the speaker wires come out of it, and add some subwoofer wires.

The 9v battery is used to find the speaker terminals. You use your multimeter to find 12v switched, 12v constant, illumination, and ground (dimmer isnt all that important, but if you find 2 grounds, you gotta differentiate between the dimmer and the full ground).

So, once youve found your power wires, you label them, and set them aside. Then to find the speaker terminals you start touching 2 wires together. When you hear a click, youve found the speaker the wires go to. Running voltage through a speaker makes it click. So you use the click, localize it to a speaker, and label it, find the next one and move on.

Its really not as big of a deal to map out your audio harness as everyone thinks it is.

In the event of a stock amplifier, and I couldnt find a patch cable (which I wouldnt use anyway because Id just bypass the stock amp and add my own), Id either find the wiring diagram out of the stock amp to what speakers went where, and splice into them there, or Id just use my method to find the correct ones.

I have a 2000 Celica GTS with premium sound. Back in 2000 when it came out nobody had any wiring data on it. I was one of the first people to try this and do it. I did a writeup on how to install a standard headunit in a premium sound car by bypassing the stock amp. And that is exactly how I did it. I used a DMM to map out my power wires, spliced deck power into them, and used a 9v battery to map my speaker wires, extended wires from the deck to the amp output, connected my stock speakers to the deck there, and I was in business. It took me a long time, but I did it. And I did it in such a way it was completely reversible, I left enough lead on the amp output harness to resplice it back into the system and reconnect the stock amp. The car I did this on I sold. But before I sold it, I reconnect all the stock stuff, and I used the same method to bypass the amp on the Celica I currently own.

Point being it isnt that hard. Dont let yourself get overwhelmed by it just cause theres a bunch of unlabeled wires back there.

09-08-2008, 01:05 PM	#1 (permalink)
Elythador No Skills Join Date: Aug 2008 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Fitting new stereo My new stereo power input is a different to the original, my store doesn't do a conversion. Should I just snip the wires and bind them with inulation tape?

09-13-2008, 06:11 AM	#14 (permalink)
Elythador No Skills Join Date: Aug 2008 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	[IMG][/IMG] I must be boring you but I think I have found the right harness here - Toyota MR2 wiring adaptor - Autoleads PC9-411 The problem is if you look at the photos (that is the lead that came with the new stereo. It has two slots to be connected to the car, whereas the harness only has one to plug in, the two slots that plug together also have different colour wires. Do I need to plug in both slots? Thanks Would the wires that came with the new stereo be the same colour codes as the bunch of wires in the harness that came out of the factory unit? If they have always been standard codes for all cars then maybe snipping them together would be the best option. A quick responce would be much apreciated, thanks again Last edited by Elythador; 09-14-2008 at 06:18 AM..

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09-08-2008, 07:40 PM	#3 (permalink)
honda_bar aka Hardtop Colin Join Date: Apr 2008 Location: Pasadena, CA Posts: 1,510 Thanks: 37 Thanked 7 Times in 7 Posts iTrader Rating: (3/100% )	trust me, do that! ^

09-08-2008, 07:43 PM	#4 (permalink)
mr2stealth I want a RHD SW20 Join Date: May 2007 Location: Phoenix, Arizona/Pueblo, Colorado Posts: 634 Thanks: 15 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	dont cut them! i learned the hard way, just get a wire harness, circuit city should have them...if not, anywhere that installs stereos should. getting the harness is way cheaper than what i went through. good thing im friends with the guy who installed my stereo after i cut the wires.

09-09-2008, 07:19 PM	#6 (permalink)
honda_bar aka Hardtop Colin Join Date: Apr 2008 Location: Pasadena, CA Posts: 1,510 Thanks: 37 Thanked 7 Times in 7 Posts iTrader Rating: (3/100% )	I don't think that it would differ much in price from an electronics store and a place that installs/sells stereo equipment. Just ask for a 199X mr2 wire harness. Should be around 10 pounds...

09-09-2008, 09:21 PM	#7 (permalink)
Luni Cage Fighter Join Date: Oct 2005 Location: Salt Lake City Utah Posts: 3,213 Thanks: 10 Thanked 130 Times in 110 Posts My Google Map iTrader Rating: (8/100% )	If you cant adapt with a harness, and must cut, it isnt a big deal. Its an old car that came with a crappy head unit in the beginning. Mines cut, no big deal.

09-10-2008, 11:37 AM	#8 (permalink)
Elythador No Skills Join Date: Aug 2008 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	I've been to the audio specialist. They don't have a harness, they say the only way it can be done is to link it straight to the amp. Haven't got a clue how to o that. I'm getting pissed off, I just want to listen to some music dammit!

09-11-2008, 10:06 AM	#9 (permalink)
deucesquared Some Skills Join Date: Apr 2008 Posts: 50 Thanks: 5 Thanked 0 Times in 0 Posts iTrader Rating: (2/100% )	Stupid question from an American but can't you purchase the harness from circuit city or best buy online and have them ship it to you? It might be more than you want to pay but if you cant get it locally it would seem to be worth it to me.

09-11-2008, 02:06 PM	#10 (permalink)
Luni Cage Fighter Join Date: Oct 2005 Location: Salt Lake City Utah Posts: 3,213 Thanks: 10 Thanked 130 Times in 110 Posts My Google Map iTrader Rating: (8/100% )	If the car has premium sound, just have them bypass the stock amplifier, and run new wires. Or do it yourself. It really isnt that hard, theres plenty of info around on how to do it. The stock harness is only really important to you if you plan on putting the stock stereo back in at a given time.

09-12-2008, 06:04 AM	#11 (permalink)
Elythador No Skills Join Date: Aug 2008 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	I've had a look online but I find it impossible to see which is the right one.

09-12-2008, 08:08 AM	#12 (permalink)
myrezi No Skills Join Date: Sep 2008 Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	depends on how much sound you looking for. In all my cars i have snipped and run the wires to my amp or deck. You not going to go back to the factory crappy radio. i would find a wiring diagram online for your model and its really easy..with a testy light or volt meter you good to go. lots of info on the net good luck

09-15-2008, 10:00 AM	#15 (permalink)
Elythador No Skills Join Date: Aug 2008 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Come on, help me out guys

09-23-2008, 06:19 PM	#16 (permalink)
GINA2MR2 Not A VR6 Join Date: Dec 2007 Location: J-Town Posts: 339 Thanks: 3 Thanked 7 Times in 7 Posts iTrader Rating: (0/0% )	cutting the MR2s harness is the stupidest thing you can ever do. mine was cut to run an amp for the speakers and separate amp for the sub.. behind the stereo is looks like a cluster 'F' it was a real B to put in a different deck and now that the wires are all different colors it impossible to know what you doing when you hook it up. get a harnness

09-23-2008, 08:40 PM	#17 (permalink)
Luni Cage Fighter Join Date: Oct 2005 Location: Salt Lake City Utah Posts: 3,213 Thanks: 10 Thanked 130 Times in 110 Posts My Google Map iTrader Rating: (8/100% )	It isnt that hard. Use a multimeter to find power and ground, and use a 9v battery to find the speaker wires. It would take me 10 minutes to map out that harness.

09-23-2008, 11:24 PM	#19 (permalink)
GINA2MR2 Not A VR6 Join Date: Dec 2007 Location: J-Town Posts: 339 Thanks: 3 Thanked 7 Times in 7 Posts iTrader Rating: (0/0% )	i try to get a pict to you.. yay for mickey shore

09-24-2008, 02:22 AM	#20 (permalink)
Luni Cage Fighter Join Date: Oct 2005 Location: Salt Lake City Utah Posts: 3,213 Thanks: 10 Thanked 130 Times in 110 Posts My Google Map iTrader Rating: (8/100% )	Well, In the harness you have the following: 12v constant 12v switched ground 12v illumination illumination ground (from the dimmer switch) front right front left rear right rear left OR you have the above power wires, then preamp signal wires to the stock amp, and the speaker wires come out of it, and add some subwoofer wires. The 9v battery is used to find the speaker terminals. You use your multimeter to find 12v switched, 12v constant, illumination, and ground (dimmer isnt all that important, but if you find 2 grounds, you gotta differentiate between the dimmer and the full ground). So, once youve found your power wires, you label them, and set them aside. Then to find the speaker terminals you start touching 2 wires together. When you hear a click, youve found the speaker the wires go to. Running voltage through a speaker makes it click. So you use the click, localize it to a speaker, and label it, find the next one and move on. Its really not as big of a deal to map out your audio harness as everyone thinks it is. In the event of a stock amplifier, and I couldnt find a patch cable (which I wouldnt use anyway because Id just bypass the stock amp and add my own), Id either find the wiring diagram out of the stock amp to what speakers went where, and splice into them there, or Id just use my method to find the correct ones. I have a 2000 Celica GTS with premium sound. Back in 2000 when it came out nobody had any wiring data on it. I was one of the first people to try this and do it. I did a writeup on how to install a standard headunit in a premium sound car by bypassing the stock amp. And that is exactly how I did it. I used a DMM to map out my power wires, spliced deck power into them, and used a 9v battery to map my speaker wires, extended wires from the deck to the amp output, connected my stock speakers to the deck there, and I was in business. It took me a long time, but I did it. And I did it in such a way it was completely reversible, I left enough lead on the amp output harness to resplice it back into the system and reconnect the stock amp. The car I did this on I sold. But before I sold it, I reconnect all the stock stuff, and I used the same method to bypass the amp on the Celica I currently own. Point being it isnt that hard. Dont let yourself get overwhelmed by it just cause theres a bunch of unlabeled wires back there.