71 F100 Wiring Problem...
Thread Starter
|
Freshman User
Joined: Nov 2010
Posts: 43
Likes: 0
71 F100 Wiring Problem...
I just started having a problem with my wiring. I think its a short but can't find it. Whenever I am driving my truck the lights will dim slightly for a less than a second every 10 to 20 seconds. Along with that, if I have the heater on, the fan shuts off, and the the panel lights aren't working... I have checked everything in the engine and behind the instrument panel compartment and can't find a short. Is there somewhere or something else I need to look at? Any help is appreciated!
Senior User
Joined: Nov 2010
Posts: 214
Likes: 0
From: North Carolina
My lights used to do the same thing...a new headlight and dimmer switch fixed that. the panel lights may be from corrosion on your fuse box...the fan im not to sure. maybe your voltage regulator is going out...just some thoughts
Posting Guru
Joined: Mar 2006
Posts: 1,182
Likes: 1
sounds like the old "blinking lights" syndrome...look on the tech article page for the "brighter brights" headlight relay setup.
Whiter Whites, Brighter Brights .: Articles
could be your headlight switch, could be the dimmer switch in the floor, could be corroded wiring somewhere.
there are better ways to run the lighting circuit (which you'll see in the article).
have to say...although this sounds like the old blinkings lights problem, i'm not sure how that would be affecting the heater fan. you may want to post this in the Electrical forum, there's a guy there who really knows his stuff.
Whiter Whites, Brighter Brights .: Articles
could be your headlight switch, could be the dimmer switch in the floor, could be corroded wiring somewhere.
there are better ways to run the lighting circuit (which you'll see in the article).
have to say...although this sounds like the old blinkings lights problem, i'm not sure how that would be affecting the heater fan. you may want to post this in the Electrical forum, there's a guy there who really knows his stuff.
Cranky Old Guy
Joined: Mar 2008
Posts: 3,562
Likes: 6
From: Raphine, Virginia
Simplest and cheapest place to start are the grounds. Battery to block, block to firewall and block to frame. Then start on your problems. Bad grounds probably cause 85% of electrical problems. I'm sure this will not eliminate all your problems, but it does need done.
Thread
Thread Starter
Forum
Replies
Last Post
Shattered
1999 - 2003 7.3L Power Stroke Diesel
16
Aug 29, 2012 02:36 PM
TonysIrishPrincess
1987 - 1996 F150 & Larger F-Series Trucks
5
Jan 28, 2010 08:32 PM
mvtofino
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
11
Nov 17, 2008 09:27 AM
LeatherNuts
1961 - 1966 F-100 & Larger F-Series Trucks
3
May 20, 2003 11:02 AM
