Toyota MR2 Message Board - View Single Post - Non-prewired Foglight Write-up

Fender0122 · 02-04-2008, 03:02 PM

Take the switch wire and lay it towards the back of the car
*i am locating the relay in the frunk if you havent already figured that out*

The chassis ground will connect to any non-painted bolt on the chassis. I used the bolt connecting the front sway bar

The BATT. (+) wire will connect directly to the battery
*I did not realize until I am doing this write up, but it is wise to buy an in-line fuse to put between the battery and the relay-- this will prevent blowing your relay or perhaps worse

The remaining wire is the positive wire for the fogs
This wire was fished through the rubber coupling behind the front left headlight and run under the headlight to the location of the left fog light

Split the positive fog wire into two to run to the right fog light.

Connect the positive fog light wire to the red wire on the left fog light. Then run the other positive wire to the red wire of the right fog light

The black wires on the fog lights will be wired to a chassis ground, so find a good place to ground these wires. I ran the wires back up to the same place I grounded the relay

3.) Now your fog lights are all wired up to the relay and you need to wire the switch and signal wire. Run the signal wire through the firewall. I used a hole that is located by your feet in between the brake and clutch iirc.

Depending on what switch you are using, test the wires to find the two wires that have no continuity in the off position and full continuity in the on position. If you are using an aftermarket switch that has a light in it, on of the 3 connectors on the switch is the ground. The switch will not light up if you do not ground it. The ground is most likely labeled, but if not, it is usually one of the outside connectors, not the middle one.

Now run the outgoing wire of the switch back through the firewall to the positive terminal of the corner light.

*Make sure you do not connect the signal wire to the turn signal. You do not want to look like a fool making a left turn and your fog lights are flashing with the turn signals*

Once you have all the wires connected, make sure the relay in engaging. You will head a click in the relay when it is connected correctly

3.) To mount the fogs, cut the farthest horizontal grill piece, but do not cut it too close to the first vertical piece. Leave about a 1/4 inch so that the fogs can cover up that rough edge.

I am not too entirely sure what most people are talking about when they mention a mounting bracket, bc my jdm fogs did not appear to have a detachable bracket and mounted fine to the stock location.

*update* I have been informed later in this thread that the brakets are used as a way to anchor the lower part of the foglight so that it aims downward so you do not have to aim the foglights like i have explained later in this post

To install the bracket, i assume there is a single bolt that holds it on--i have not installed this bracket so someone please inform me if there is a different way to attach this

Here is the bracket:

Found here

the clips are pushed into the hole in the bracket--one clip is used per side--a post on the foglight is meant to pop right into the clip

The bolts needed to mount the fogs are two 8mm bolts for each fog, iirc. i used extra bolts that hold on the radio, for they are the correct size/pitch
(you can find these at any junkyard with toyotas, they are usually just sitting on the floor of the car if the radio has been removed)

after they are mounted, make sure they are level and not aimed into peoples eyes. There is a small phillips head screw on the face of the fogs that when tightened, raises the fogs and vice versus. I faced my car towards a closed garage door and just took a roman measurement (distance from elbow to tip of finger, for example) from the headlights to the fogs and made sure that the light pattern was the same distance on the garage door. This will ensure that the angle of the fogs is the same as the headlights. This may be an incorrect way to aim fogs, but it works for me.

Other half-_____ option:
Instead of worrying about the whole relay confusion, it is possible to just hard-wire the fogs directly to the corner lights. Again, make sure you wire them to the parking lights and not the turn signals. I strongly suggest you take the time to wire the relays bc it will be more reliable and not stressing your electrical system. You run the risk of blowing fuses if you wire them directly to the corner lights.

I hope I have not forgotten anything, but if I have, please feel free to PM me and I will edit the thread. Please do not post any mistakes I have because I would like to keep this thread easy to read.

Hopefully this will help people. I will update the thread or make another with how to install the motorized JDM fogs once I get the steering wheel sensor.

02-04-2008, 03:02 PM	#2 (permalink)
Fender0122 snapping 1 bolt at a time Join Date: Jul 2007 Location: Pickerington, Ohio School: Toledo, Ohio Posts: 30 Thanks: 0 Thanked 3 Times in 2 Posts My Google Map iTrader Rating: (0/0% )	Take the switch wire and lay it towards the back of the car i am locating the relay in the frunk if you havent already figured that out The chassis ground will connect to any non-painted bolt on the chassis. I used the bolt connecting the front sway bar The BATT. (+) wire will connect directly to the battery I did not realize until I am doing this write up, but it is wise to buy an in-line fuse to put between the battery and the relay-- this will prevent blowing your relay or perhaps worse The remaining wire is the positive wire for the fogs This wire was fished through the rubber coupling behind the front left headlight and run under the headlight to the location of the left fog light Split the positive fog wire into two to run to the right fog light. Connect the positive fog light wire to the red wire on the left fog light. Then run the other positive wire to the red wire of the right fog light The black wires on the fog lights will be wired to a chassis ground, so find a good place to ground these wires. I ran the wires back up to the same place I grounded the relay 3.) Now your fog lights are all wired up to the relay and you need to wire the switch and signal wire. Run the signal wire through the firewall. I used a hole that is located by your feet in between the brake and clutch iirc. Depending on what switch you are using, test the wires to find the two wires that have no continuity in the off position and full continuity in the on position. If you are using an aftermarket switch that has a light in it, on of the 3 connectors on the switch is the ground. The switch will not light up if you do not ground it. The ground is most likely labeled, but if not, it is usually one of the outside connectors, not the middle one. Now run the outgoing wire of the switch back through the firewall to the positive terminal of the corner light. Make sure you do not connect the signal wire to the turn signal. You do not want to look like a fool making a left turn and your fog lights are flashing with the turn signals* Once you have all the wires connected, make sure the relay in engaging. You will head a click in the relay when it is connected correctly 3.) To mount the fogs, cut the farthest horizontal grill piece, but do not cut it too close to the first vertical piece. Leave about a 1/4 inch so that the fogs can cover up that rough edge. I am not too entirely sure what most people are talking about when they mention a mounting bracket, bc my jdm fogs did not appear to have a detachable bracket and mounted fine to the stock location. update I have been informed later in this thread that the brakets are used as a way to anchor the lower part of the foglight so that it aims downward so you do not have to aim the foglights like i have explained later in this post To install the bracket, i assume there is a single bolt that holds it on--i have not installed this bracket so someone please inform me if there is a different way to attach this Here is the bracket: Found here the clips are pushed into the hole in the bracket--one clip is used per side--a post on the foglight is meant to pop right into the clip The bolts needed to mount the fogs are two 8mm bolts for each fog, iirc. i used extra bolts that hold on the radio, for they are the correct size/pitch (you can find these at any junkyard with toyotas, they are usually just sitting on the floor of the car if the radio has been removed) after they are mounted, make sure they are level and not aimed into peoples eyes. There is a small phillips head screw on the face of the fogs that when tightened, raises the fogs and vice versus. I faced my car towards a closed garage door and just took a roman measurement (distance from elbow to tip of finger, for example) from the headlights to the fogs and made sure that the light pattern was the same distance on the garage door. This will ensure that the angle of the fogs is the same as the headlights. This may be an incorrect way to aim fogs, but it works for me. Other half-_____ option: Instead of worrying about the whole relay confusion, it is possible to just hard-wire the fogs directly to the corner lights. Again, make sure you wire them to the parking lights and not the turn signals. I strongly suggest you take the time to wire the relays bc it will be more reliable and not stressing your electrical system. You run the risk of blowing fuses if you wire them directly to the corner lights. I hope I have not forgotten anything, but if I have, please feel free to PM me and I will edit the thread. Please do not post any mistakes I have because I would like to keep this thread easy to read. Hopefully this will help people. I will update the thread or make another with how to install the motorized JDM fogs once I get the steering wheel sensor.