HELP! ST202 fog light wiring, car is taken apart! Options

[phokur]

I am trying to install my ST202 fog lights and I am stumped. In the car's fuse box inside the car, there is a fuse called "FOGS". Mine even has a 20amp fuse in it already. I can't seem to find where it leads outside the car. Where is the switch/output for the fogs?

[snapshotgt]

94/95 do not have wires ran for fogs. You'll have to do it all yourself. 96-99 have pre-ran foglight wires even if the car did not come with them from the factory.

Good luck.

Btw, the search button will lead to MANY threads about actually wiring them.

[phokur]

Doh! In my delirious state I forgot to search first. ty man!

[phokur]

Another dumb question. Since that fog fuse is there for show, can I pop out the fuse and tap into it for my Vcc? I am using a relay, so I only need to draw enough to trip it.

[BloodyStupidDave...]

Another dumb question. Since that fog fuse is there for show, can I pop out the fuse and tap into it for my Vcc? I am using a relay, so I only need to draw enough to trip it.

The fog fuse and the fog relay locations will be pre-wired with the appropriate terminals connected to power and others coming out to pins on the plugs. That is, the actual fuse and relay board is wired as they are standard. It is the wires in the wiring loom that are missing. Unfortunately, the wiring diagram on celica tech doesn't include details for the fog lights (presumably because they are an option in the US). Any one got the actual 6gc front and rear fogs bgb wiring diagrams?

This post has been edited by BloodyStupidDavey: Jul 1, 2007 - 5:43 PM

[phokur]

I can't find the wire that comes out of the fuse box. I've been checking for continuity and can't seem to find where it leads. I've checked all pics on here and can't seem to find the relay or anything to tap into. I'll just tap into the fuse holder itself, run to an external fuse, then to the relay...

which leads me to another predicament. Before I drill a hole in my floor, is there a preferred way to run this signal wire into the engine bay?

[netrata]

I bought one of those universal fog light installation kits that come with the relay and I tapped power from both the battery and used a fuse tap into the the turn signal fuse in the interior fuse block. I'll try and write it up a bit but I do know that someone on the forum already made a writeup for this.

This post has been edited by netrata: Jul 1, 2007 - 10:19 PM

[phokur]

Thanks for the replies! That's how I'm thinking to do it netrata. I have the relay next to the fuse box and a switch on the dash. I just need to figure out how to route the wire from the dash to the relay. Where did you put the wire to go from the cabin to the engine bay? I'm thinking of drilling a hole about 4" under the steering shaft and just sticking it through... that is, unless there is a predrilled wire hole that has room for one more that I've missed.

[netrata]

I used the same hole that was already there from the celi's previous owner when they got the car alarm installed. I'm pretty sure it's a hole drilled about 2 or 3 inches from the steering shaft, but I can try and verify and possibly post some pix up tomorrow morning. I just followed the diagram that comes with the fog light wiring kit. Unscrewed/pry the whole bottom panel below the steering wheel to route the wiring from the firewall to the fuse block, then to the fog lamp switch. I secured all of the wiring with with zip ties and made sure it was wasn't noticeable. Then I reloomed all of the wiring from the firewall to the battery and all the way to the fog lamp. If you want to know what switched I used, I actually bought a factory toyota foglamp switch off ebay for like $13 and located it on the right side of the steering wheel where there's a rectangle-shaped piece on the lower dash panel. Just pry that off and the fog lamp switch fits right in perfectly.

[BloodyStupidDave...]

I can't find the wire that comes out of the fuse box. I've been checking for continuity and can't seem to find where it leads. I've checked all pics on here and can't seem to find the relay or anything to tap into. I'll just tap into the fuse holder itself, run to an external fuse, then to the relay...

Well I'm going to need to trace all the wires to create my own wiring diagram unless anyone has an appropriate Toyota wiring diagram. I'll be doing that this evening so I'll post my findings.

unless there is a predrilled wire hole that has room for one more that I've missed.

From the relay box with the turn signal / indicator flasher unit, follow the wires that run out of the blue plugs. They run through a hole right in the top corner of the firewall into the fender and then through another grommet into the engine bay. If you unwrap the black electrical tape around the grommets you'll then be able to easily get several more wires through the grommets. Once it is all in place, use fresh electrical tape to bind the grommet back onto the wiring loom.

You'll need to temporarily remove the plastic wheel well liner but that is an easy job - about 10 screws and bolts hold it in place.

This post has been edited by BloodyStupidDavey: Jul 2, 2007 - 3:21 AM

[phokur]

Well I'm going to need to trace all the wires to create my own wiring diagram unless anyone has an appropriate Toyota wiring diagram. I'll be doing that this evening so I'll post my findings.

I'd appreciate it! I broke my rocker switch, so the project will be postponed until I can get a new one tomorrow. I have everything done except the main switch. I just need to know where that fog fuse and wires lead so I can grab power from them while taking advantage of the already installed fuse. If you can figure out the colors or general location I would greatly appreciate it. I did consider jumping off of the fuse socket, but I don't think it would look too professional plus I'd have to find another external fuse to use.

[phokur]

Have any luck Davey?

[BloodyStupidDave...]

Have any luck Davey?

Not so much. I'll tell you what I have so far.


The main power from the engine bay comes in on IA1 (having already gone through the 100A alt and main fuses). IA1 is located at the inpane junction box (left kick panel on LH drive cars, right kick panel on RH drive cars). Power is routed internally inside the inpane junction box to one side of the fog fuse. Power is routed internally from the other side of the fuse to IF8.

A blue/white wire connects IF8 on the inpane junction box to ID1.3 at the left kick panel (LHD) or right kick panel (RHD). The other side of ID1.3 is routed to pin 4 of the fog light relay. The fog relay is attached to junction box #1 at the same location. Pin 1 of the fog light relay then goes to both fog lights as a red/white wire. There is a splice point (at location EA) to feed the two lights - the splice point is about half way along the fender (right fender for RHD, left fender for LHD).

The wire on the other side of the fog lights is white/black. The white/black wire from the LH fog light runs to the splice E3 and then grounding point EB at the front of the left fender while the white/black wire from the RH fog light runs to a splice E2 and then the grounding point EA at the front of the right fender. Additionally, there is a white/black wire that runs between the two splice points (E3 and E2) (routed with the engine bay wiring loom across the top of the radiator).

On RHD cars, E3 is located in the front left fender and E2 is located midway between the left and right fog lights on the wiring loom that crosses the top of the radiator. On LHD cars, E3 is located midway between the left and right fog lights on the wiring loom that crosses the top of the radiator and E2 is located in the front right fender.

Pins 1 and 4 of a relay are the relay switch. Pins 2 and 3 are the coil. A green/black wire runs from pin 3 of the relay to pin 11 of the left combination switch (steering stalk switch). A white/black wire runs from pin 10 of the combination switch to a grounding point (dunno which one). pins 10 and 11 of the combination switch are the two sides of the fog switch.

For EDM (Europe, including the UK & Ireland), a green wire runs from pin 2 of the fog light relay. This is connected to the switched supply for the parking/tail lights (so that the fog lights can only come on if the combination switch is at the tail or head position - that is, they only come on when the tail lights are on).

The green wire runs from pin 2 of the fog light relay to 1K.12 on junction box #1. Junction box #1 is wired so that 1K.12 is connected to 1A.8, 1C.12 and 1F.5.

1C.12 is connected to ID.12 via a green wire. ID.12 goes to one side of the 15A tail lamp fuse, the other side being connected to pin 3 of the taillight relay. Pins 1 and 5 of the taillight relay are connected to pin ID.2 which in turn is connected to 2A.1 and then the 100A Alt fuse via a white cable.

1A.8 is connected to a green wire that exits into the front fender and from there supplies the front parking lights (and if fitted, front sidemarker lights).

1F.5 is connected to BQ1.1 (the connector for the floor loom) via a green wire. The other side of BQ1.1 is also a green wire, this travels the length of the car and feeds the license plate lights, tail lights (and if fitted, the rear sidemarker lights).

Pin 2 of the fog light relay is connected to IF.9 and from there to pin 2 of the integration relay. Among other things, the integration relay (pin 1) is connected to ID1.5 and from there via a cyan wire to pin 14 of the light control combination switch. Pin 16 of that switch is ground via a white/black wire to J1.A and then grounding point ID (both in the left kick panel for LHD, right kick panel for RHD).

Additionally, it may be that the green wire is a different colour and/or routed differently for other markets. I believe it is standard practice in the US for the fogs to only operate when the low or high beams are on, whereas in the UK one can technically drive with parking lights and fogs. In some other countries with some cars it isn't possible to put fogs and high beams on at the same time.

Other points to note:
* There may be a connector on the red/white wire between the relay and E1. But I don't think there is.
* There is probably a junction box or splice point on the white/black wire from the combination switch.

I'll update this post with a diagram at some point. A picture is worth a thousand words but takes longer to produce on a computer.

This post has been edited by BloodyStupidDavey: Sep 11, 2007 - 2:23 PM

[phokur]

Good work so far man. I went ahead and found my own tap. There is a plug under the dash for the gauges (checked it by pulling fuses). One of the terminals was hot and also empty, so I fabbed a male end terminal to pop into it. I grounded the switch on one of the bolts on the fender side, and it works! The amperage must be pretty high coming out of that plug because it blew out my rocker switch light, but the relay can only draw so much so I think I'll be fine. (The rocker was bright as bloody hell anyway).

[BloodyStupidDave...]