Headlights
Go Bills !
Joined: Jan 2008
Posts: 2,778
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From: Buffalo, NY
A switch and a relay.
keyed power source through a switch (so you deactivate this overide mod) that controls a relay. The relay will turn on the park lamps and head lights by the key on.
Just when the motor is running is another issue.
keyed power source through a switch (so you deactivate this overide mod) that controls a relay. The relay will turn on the park lamps and head lights by the key on.
Just when the motor is running is another issue.
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Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
You need to splice into both of your headlight wires with a relay (one for each, I'm thinking). Then send switching power to the relay from a switched 12V source. I can't remember the current of each bulb, but a 20 or 30A relay should do it.
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Go Bills !
Joined: Jan 2008
Posts: 2,778
Likes: 65
From: Buffalo, NY
Do it right at the switch. The relay would be your imaginary fingers. Wire the relay to "MAKE" on key on, by a key on source.
Edit. Something like this should work.
The existing switch is like a manual relay. You would just be jumping in a relay to over ride the manual portion by a Key on source.
I just don't like the idea of the lights on while trying to start. I don't think it will hurt anything though
Edit. Something like this should work.
The existing switch is like a manual relay. You would just be jumping in a relay to over ride the manual portion by a Key on source.
I just don't like the idea of the lights on while trying to start. I don't think it will hurt anything though
Postmaster
Joined: Jan 2009
Posts: 2,544
Likes: 4
From: Suffolk, VA
You can't if it's a pre '01 truck. I found that light switch does nothing when you pull the **** out, even though it seems like it should. Pop tried this and found the insides of the switch aren't set up for it. I guess you'd have to totally splice in a newer switch and pigtail and be creative with the wiring. I ended up triggering my fog light relay to come on with the parking lights.
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