Headlight Sytem Wiring
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Freshman User
Joined: Mar 2003
Posts: 32
Likes: 0
From: Wisconsin
Headlight Sytem Wiring
I'm a volunteer firefighter and want to put a headlight flasher unit in my 97 F150. To order the correct unit, I need to know if the headlight system utilizes positive or negative switching.
I have no idea what this means or what my truck might have.
Can someone help?
Thanks!
I have no idea what this means or what my truck might have.
Can someone help?
Thanks!
Posting Guru
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
Headlight Sytem Wiring
Most of the trucks I have seen are positive switched, meaning the headlights are grounded to the rad support and the power wires are fed thru the headlight switch. Of course these are all pre-80's trucks 
I am unsure of the newer trucks....so maybe a quick call to a Ford Dealer would confirm what you have. I seem to recall that the newer trucks have relays for the lights which could be negatively switched....
Not much help am I
I am unsure of the newer trucks....so maybe a quick call to a Ford Dealer would confirm what you have. I seem to recall that the newer trucks have relays for the lights which could be negatively switched....
Not much help am I
Posting Guru
Joined: Mar 2000
Posts: 2,306
Likes: 0
Headlight Sytem Wiring
yo,
Gall says it's + switched; look here for the compatibility chart and more info incl wiring:'
http://www.galls.com/shop/viewProduc...jsp?item=FS003
see:
"Click here for vehicle compatibility" at bottom
Gall says it's + switched; look here for the compatibility chart and more info incl wiring:'
http://www.galls.com/shop/viewProduc...jsp?item=FS003
see:
"Click here for vehicle compatibility" at bottom
