Andy; I'm assuming, since you didn't mention it, that the right side light
is OK. This would eliminate switch, fuse, and relay causes.
Feed to the lights is from the power distribution center under the hood;
fuse C (20 amp), light blue wire. This wire should have 12 volts at the bulb
socket unless the battery is disconnected or fuse C is blown.
>From the lights, a light blue/black wire connects to the fog lamp relay in
the PDC. This is the relay that drops out the fogs when the high beams are
on.
>From the relay, a black/light green wire goes to the headlight switch.
Battery ------>Fuse C --(LB)----> Bulb --(LB/BK)---> Relay---(BK/LG)---->
Switch
The fogs are hot all the time and are grounded by the switch to complete the
circuit, so if one light works and the other doesn't, it looks like a bad
connection between the fuse and the bulb socket, or a bad socket, or (don't
you hate it) a brand new, out of the box, bad bulb.
Neil
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