Fog light switches

[Joe Yakubik <75363.2524@compuserve.com>]

Fog light switches:

Not too sure about the eight bladed one, I assume that is a three position
(off/front/front + rear). It may be similar to the six blade switch for the
newer cars (100/200 89+)  Most of the newer switches have a similar set-up.  I
assume there could be some sort of backwards compatibilty.

The six bladed fog light switch is set-up as follows:

Pin 1 is the power supply for the red illumination, tap off the gray/blue wire
in pin 1 from the rear fog light switch to have this controlled with the dimmer.

Pin 2 is ground for both lights, the red illumination and the nifty green
triangle.

Pin 3 is not used, but is hard wired to pin 6 (you can use it if you like, I
guess) and is also the plus side of the green triangle.  Not ground

Pin 4 is also not used, unless you want to attempt to do a sort of Euro
front/rear fog light connection (not recommended, but is required to make the
rear-fog light idiot proof, ie if the rear is on, the fronts MUST also be on)

Pin 5 is the input side of the switch.  When closed it connects to pin 3, pin 4
and pin 6.  This is the normal position for something like a wire-tap from the
low beam, or maybe your ACC wire.

Pin 6 is the output side of the switch.  It is hard wired to pin 3 (then to
green triangle)  This is the normal position for your output to the relay, or
direct to fog lights.

As near as I can tell, this is the same switch set-up for front and rear fog
light switches, the ABS switch, and the rear defroster switch. Unless one of us
(Tmein@aol.com or me) is confused, connecting Pin 1 to power and Pin 3 to ground
should make both lights illuminate very dim all the time.

Hope this helps. Any other fog light questions, feel free to ask, I've played
with them way too much.

Joe Yakubik