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911pcars 911pcars is offline
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Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
Quote:
Originally Posted by Rick Lee View Post
Not sure what you mean here. I think I've tried every combination of connections and the foglights work just fine. I just can't get the LED to work. What else can I do?
1. Switch on the source side of the load (typical):
battery > fuse > switch > load > ground

2. Switch on the ground side of the load:
battery > fuse > load > switch > ground

An illuminated switch can only work when it's located on circuit type no. 1 above.

3. Here's the same circuit as no. 2, but with an illuminated switch.
battery > fuse > load > switch > ground
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiV
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiibulb > ground

If your fog lights are wired like no. 3 above, the bulb in the switch won't work. Reason, the bulb creates a series-parallel path with the load (sorry, maybe getting too technical), but the load (e.g. fog lights) would use up all of the 12V.

Sherwood
Old 06-29-2011, 09:35 PM
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