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Ford F-Series Electrical and Lighting Problems

111 messages,  Last post on Nov 24, 2009 at 2:46 PM

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What is this discussion about? Ford F-150, Lights, Truck

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#68 of 111 F150 battery drain..STUMPED! by shep4016 Sep 12, 2008 (1:51 pm)
OK I have a '92 F150 5.8L which has an elusive battery drain. Here's the situation: I'd been on some very rough roads, probably driving too fast. When I stopped to set up camp and shut off the ignition, the truck died. No response whatsoever when I turned the key.   Got lucky and found a guy who sold me a battery, truck started. I was out for a few more days and had no problems. When I got home and didn't run it for 2 days it again would not start--again, no response at all.   I replaced the battery and starter (just for good measure) and she started right up. The next day, completely dead. Rechecked my starter installation--all good--recharged the battery and she started right up. Next day, dead again.   I recharged and retested the battery--it held charge when it was not hooked up--and when I put both cables back on the voltage dropped rapidly (30 secs) to about 6.5V. When I pulled either cable off it steadily recharged itself. Both cables hooked up, rapid drain; either cable alone and no problem.   I unhooked the voltage regulator harness and the drain stopped, so I replaced it. With the new one installed, rapid drain AGAIN!   I hooked up my multimeter between the POS post and cable and then the NEG post and cable, each time pulled every fuse and relay, but turned up nothing. (In line on the NEG side, though, with each fuse pulled I got a minimal jump in voltage--after I pulled and replaced them all the total voltage jump was .3V)   So I checked continuity across the tops of every fuse. The EEC relay (diode) showed resistance of .18. The maxi20 fuse associated with fuel pump relay showed resistance of .01, so I replaced the relay and got continuity.   Still the battery drains. I am stumped. Can anyone out there give me a CLUE??   Thanks, Shep Replies to this message: mickeymouse2 (Sep 23, 2008 4:00 pm)
#69 of 111 electrical windows by hughett Sep 23, 2008 (7:07 am)
Hello my name is Hughett, I have a 2005 F150, XLT 54. Triton. A week ago when I stopped at the light my truck just shut off. Although I had a new battery, I had to replaced the battery. Then two days ago after getting into my truck I tried to roll down the driver side front window, but the whole window just dropped between the door and panel. Now the drivers side controls will roll the other windows down but will not roll them back up??????? where there any recalls on the electrical system on the 2005 F150 that I should know about? Help please!!!!!!!! Hughett
#70 of 111 Re: F150 battery drain..STUMPED! [shep4016] by mickeymouse2 Sep 23, 2008 (4:00 pm)
Replying to: shep4016 (Sep 12, 2008 1:51 pm) Sounds like a parisitic draw. You can only check for that with an external probe on computer controled vehicles just for info. Here is what you can do though. Disconect the battery and then disconect the "B" terminal that is conected to the Alternator. That is the big 8 guage cable leading to the positive post from the alternator. Put something over it so when you reconect the battery it doesn't short to ground. Reconect the battery and see if the drain is still there. If the drain is gone your most likely cause is a shorted alternator. And yes I have come across alternators that charge the vehicle, but have a parisitic draw due to a defect. From what you described on the voltage drop when the battery is connected, it is a big short. If your positive cable is touching ground somewhere, that would cause it too, but most likely would melt at that area. Suspect your alternater!!
#71 of 111 F-150 Headlight adjusters by tjfitz Sep 27, 2008 (1:26 am)
My 1999 F-150 has three adjusters per headlight, and only two of those are "adjustable". The third seems to be factory-set.   My lower adjusters are seized because of rust on the adjuster metal screw thread. I've done the usual WD-40 soak but still can't move the screw in the threaded plastic hub of the adjuster, and at least one of the hubs already has a crack running along its length.   Does anyone know of a source for buying these adjuster assemblies? I'm afraid Ford will want a big price for them. I've tried eBay and searched the Internet with Google with no luck. Replies to this message: tjfitz (Oct 03, 2008 6:45 am)
#72 of 111 Re: F-150 Headlight adjusters [tjfitz] by tjfitz Oct 03, 2008 (6:45 am)
Replying to: tjfitz (Sep 27, 2008 1:26 am) I went to a local car junk yard and I studied eBay for headlight adjusters, but it seems they are not sold separately from the headlights, and the headlight assemblies aren't selling for much less than $30 each.   I spent some time yesterday spraying the two seized adjusters with WD-40 then tapping them with a small hammer hoping to loosen the plastic rider on the rusted threads, but no luck.   Then I turned one of the seized riders as forcefully as I dared, and it began to move on the threads. That rider was the one what had a crack running its length, parallel with the threads.   This morning I got out my utility knife and cut the rider on the other seized adjuster until it was all the way through the hub and now that one moves on the threads, too.   It is a destructive solution, but is seems to solve my problem, and hopefully will save me about $60!
#73 of 111 Re: Aux light switches on 2005 F250SD [davey11] by fordman69 Dec 19, 2008 (5:32 pm)
Replying to: davey11 (Nov 07, 2007 1:26 pm) The wires are on the left side under the hood in the corner at the fire wall. They are usually taped to another set of wires. There will be 4 of them all together. I have an 05 but I cannot find the ones under the dash to plug into the switches. Where are they?
#74 of 111 front/rear directionals do not work when it's cold out by mmcdermott Dec 20, 2008 (2:03 pm)
I have a 2004 F150, when it gets cold out the truck needs to warm up for at least 15 min. before the directionals will work. What would the cause of this be?
#75 of 111 Trailer light problems by hobie1944 Dec 23, 2008 (5:02 am)
While pulling a trailer with my 2003 F250 Super Duty, the right turn signal and stop light on the trailer does not work, however the truck lights work just fine. It does not matter which trailer I pull they all act the same. I understand there are separate relays for the trailer lights but I cannot find their location. Replies to this message: mickeymouse2 (Dec 23, 2008 1:00 pm)
#76 of 111 Re: Trailer light problems [hobie1944] by mickeymouse2 Dec 23, 2008 (1:00 pm)
Replying to: hobie1944 (Dec 23, 2008 5:02 am) Since the lights work on your truck and left sides of trailer only. You didn't mentioned if the tail light works on right side. If wired correctly, check the conection of the green wire in you truck trailer harness for power with test light when brake or turn is on. If no power, then it is not connected to the circuit anymore on your truck. Resplice into truck harness for brake/turn right side(should be green wire in truck harness. Looking under the truck you will see where the trailer harness goes into the truck harness.   Wire Diagram Wire color   White Ground Green Right brake/turn + Yellow Left brake/turn + brown Tail/marker light +
#77 of 111 ford f250 electric problems by hj25wmny Jan 07, 2009 (6:44 am)

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