3S-GTE JDM 3rd Gen Turbo Engine Hook up aftermarket tach?

Mr. Anderson.GCC · 03-12-2009, 02:10 PM

Hey guys, I'm having ATS do a 3rd gen swap into my 93 NA, and I would like to install an aftermarket tach after I get my car back. Something like this: Twos R Us - Parts for Toyotas from Club MR2

Could anyone tell me how I can hook this up without messing with the stock tachometer?

Landjet · 03-12-2009, 03:04 PM

Easy, the tach signal is typically picked up from the negative side of the coil. No additional parts necessary.

Mr. Anderson.GCC · 03-13-2009, 12:07 AM

Sorry for being such a noob, but what coil are you referring to? And if I install this tach, will my stock tach still work as well?

MR2 Drifter · 03-13-2009, 03:01 AM

I also wanted 2 know, after researching 4 a while I realized....the tach comes with 3 wires, red is power, black is ground, and the last wire is suppose to hook up to the negative side of the ignition coil, I never got around 2 installing it because it was too much work

Mr. Anderson.GCC · 03-13-2009, 10:29 AM

Quote:

Originally Posted by MR2 Drifter

I also wanted 2 know, after researching 4 a while I realized....the tach comes with 3 wires, red is power, black is ground, and the last wire is suppose to hook up to the negative side of the ignition coil, I never got around 2 installing it because it was too much work

Do you mind telling me where the ignition coil is on the 3rd gen 3sgte?

Landjet · 03-16-2009, 06:13 PM

To find the coil, follow the coil wire(the only ignition wire not going to a cylinder) from the distributor down to the coil. There will be an ignitor stacked on top of it. The coil(the black one) will have 2 wires going to it. Use a volt meter and find the one with 12 volts with the ignition in the on position. Now, ignore this wire and use the one beside it(this will be the coil ground). Yes, your factory tach will work at the same time as the aftermarket tach.

03-12-2009, 02:10 PM	#1 (permalink)
Mr. Anderson.GCC Some Skills Join Date: Apr 2008 Posts: 75 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	Hook up aftermarket tach? Hey guys, I'm having ATS do a 3rd gen swap into my 93 NA, and I would like to install an aftermarket tach after I get my car back. Something like this: Twos R Us - Parts for Toyotas from Club MR2 Could anyone tell me how I can hook this up without messing with the stock tachometer?

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03-12-2009, 03:04 PM	#2 (permalink)
Landjet murdered out Join Date: Mar 2008 Location: Trussville,AL Posts: 38 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	Easy, the tach signal is typically picked up from the negative side of the coil. No additional parts necessary.

03-13-2009, 12:07 AM	#3 (permalink)
Mr. Anderson.GCC Some Skills Join Date: Apr 2008 Posts: 75 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	Sorry for being such a noob, but what coil are you referring to? And if I install this tach, will my stock tach still work as well?

03-13-2009, 03:01 AM	#4 (permalink)
MR2 Drifter No Drifting Skills Join Date: Jun 2008 Location: Chicago Posts: 948 Thanks: 3 Thanked 18 Times in 18 Posts iTrader Rating: (2/100% )	I also wanted 2 know, after researching 4 a while I realized....the tach comes with 3 wires, red is power, black is ground, and the last wire is suppose to hook up to the negative side of the ignition coil, I never got around 2 installing it because it was too much work

03-16-2009, 06:13 PM	#6 (permalink)
Landjet murdered out Join Date: Mar 2008 Location: Trussville,AL Posts: 38 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	To find the coil, follow the coil wire(the only ignition wire not going to a cylinder) from the distributor down to the coil. There will be an ignitor stacked on top of it. The coil(the black one) will have 2 wires going to it. Use a volt meter and find the one with 12 volts with the ignition in the on position. Now, ignore this wire and use the one beside it(this will be the coil ground). Yes, your factory tach will work at the same time as the aftermarket tach.