legacycentral bbs

Looking for JDM wiring diagram for 1998-99 fog lights.

I am in the process of installing the JDM fog lights. Second gen projectors with the turn lights. Wiring the projectors to the appropriate switch is not an issue.

What I am trying to do is wire in the Turn lights properly. With the stock wiring, there is not really any point where they can be wired in. I have sat down with the factory wiring chart. And the entire system running the turn signals has flashing(alternating) power as provided by the hazard module(which ALWAYS has power, as per fuse FB-19) and then providing the alternating power to the hazards and turn signals is engaged via the turn signal switch or hazard switch.

You cannot wire into the turn signal switch without providing constant power to the turn signals when the switch is engaged.

I would like to see how the JDM car wires it's fog light turn lights. There MUST be a double throw for left and right in the turn signal switch or a vastly different wiring setup.

There is probably switched constant power available somewhere on the flasher module itself. Check out the module with a DVM as you operate the turn signals and find where you have switched constant power and use that to close a relay. That's my best guess based on your description - I haven't played with any of this personally.

GD

The module has three wires
1. Positive from Fuse Box (always has power, with ignition on)
2. Alternating power to flash signal lights
3. directly to ground

This module is always hot. I could run a relay off the turn signal switch but only if I want both turning lights to come on regardless of left or right.

Included is the wiring diagram


I would really like to see the JDM diagram to compare.

You're right - the JDM switch must contain more contacts.

You could still do it using 2 12v delay-on-break timer relays. Just wire up the switch to energize the relays with a 1 or 2 second delay interval that allows for the flasher module to drop out the trigger voltage. This way when the flasher is flashing it will continually reset the delay in the timer but when it stops the timer will shut off the turn lights after a 1 second delay.

GD

Thanks, yea at this point delay on break relays may be the best method to wire this. Unless I can find out if the JDM switch has more contacts and if I can buy one.

I have been unable to find the JDM wiring to make sure of this though.

*edit

Searching for delay on break relays on digikey has been a little disheartening. The relays I could find were WAY overly complex and cost at minimum $50 each.

Baulde wrote:Unless I can find out if the JDM switch has more contacts and if I can buy one.

I would think it likely that the switch is so different that it can't be used due to most of the JDM and EDM stuff being right hand drive. Also very hard to source initially and if you ever need a replacement.....

The relays, while potentially just as expensive, will be arguably easier to install (no column disassembling), and easier to source replacement parts for.

The JDM stuff might use a different flasher module but it would seem easier from a design standpoint to just use the switch so I kind of doubt it.

GD

Baulde wrote:Searching for delay on break relays on digikey has been a little disheartening. The relays I could find were WAY overly complex and cost at minimum $50 each.

Yeah - a lot of timer relays are multi-function. You may have to scour around to find something that isn't so broadly designed.

GD