Fog light operation, With or without? |
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Fog light operation, With or without? |
boxsterfan |
Dec 6 2013, 06:24 PM
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#1
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914's are kewl Group: Members Posts: 1,776 Joined: 6-June 03 From: San Ramon, CA Member No.: 791 Region Association: Northern California |
Are the fog lights supposed to work independent of the headlights?
Mine never come on unless the headlights are on. |
Mike Bellis |
Dec 6 2013, 08:53 PM
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#2
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
The fog light relay gets it's power leg from the headlight switch and it's ground leg from the high beam fuse. When the low beams are on, the relay has power from the switch and the ground through the high beam filament. When the high beams are on, the ground turns positive and the fog relay shuts off.
This is an easy and free rewire without the purchase of an external device. If you pull the white/blue wire off the high beam fuse and ground it, the fogs will work if any headlamp is lit. If you take the black/blue wire from the fog switch and apply power, the fog lights will work anytime (if you did the previous mod) NOTE: there are 2 white blue wires on one terminal at the high beam fuse. one goes to the fog relay and one goes to the indicator lamp in the dash. Only disconnect the one to the fog relay and ground it. If you ground both the dash indicator for high beam will not work. Easy! (IMG:style_emoticons/default/smile.gif) |
euro911 |
Dec 7 2013, 12:27 AM
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#3
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,851 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
NOTE: there are 2 white blue wires on one terminal at the high beam fuse. one goes to the fog relay and one goes to the indicator lamp in the dash. Only disconnect the one to the fog relay and ground it. If you ground both the dash indicator for high beam will not work. Huh? I haven't looked at the schematic, but wouldn't grounding a hot lead short the circuit? I'm not getting it, Mike (IMG:style_emoticons/default/confused24.gif)Easy! (IMG:style_emoticons/default/smile.gif) |
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