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ground problems after bed re-install..

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Old 07-27-2013, 01:56 PM
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Default ground problems after bed re-install..

seems as though i may have a ground problem...

now that the truck is back together, anytime i hit the brakes, or turn signal, the back up light comes on.

this only happens when the trail harness is connected. when i by pass the trailer harness it doesnt do this. ive re-grounded the trailer harness, and it still hasnt fixed it.

any ideas?

anyone have a pic of the underside of their truck that has the tow package, so i can make sure im not connecting things wrong?
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Old 07-27-2013, 02:01 PM
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Yea, I have an idea. Don't remove the bed to do the fuel pump. I knew this was going to happen and be your next post. Be here next Saturday and we can look at mine and see where the grounds are.
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Old 07-27-2013, 02:11 PM
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Originally Posted by zman17 View Post
Yea, I have an idea. Don't remove the bed to do the fuel pump. I knew this was going to happen and be your next post. Be here next Saturday and we can look at mine and see where the grounds are.
there are only 2 grounds. one at the front of the bed that connects to the cab, then the trailer wiring harness ground.

if i leave the trailer harness disconnected and just plug the main harness into the lights, everything works as it should.

the second i plug in the trailer harness it starts acting up.

as i stated i regrounded the trailer harness, but its still doing it.
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Old 07-27-2013, 02:24 PM
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So everything works without the trailer hooked up?
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Old 07-27-2013, 02:33 PM
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Originally Posted by zman17 View Post
So everything works without the trailer hooked up?
no trailer... its the factory 7 way harness that connects to the factory harness. its the vehicle side trailer harness thats acting up. i havent hooked up a trailer in months.
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Old 07-27-2013, 03:12 PM
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Then check your trailer harness for pinched wires, etc. Didn't set the bed down, and pinch it somewhere did you?
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Old 07-27-2013, 04:49 PM
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nope no pinched wires... as you can see



however. i clipped the 12v wire, and brake feed wire, and pulled the harness out. i dont have a pic, but lets just say, i think i found my problem.

holy f'n corroded!

im going to call the dealer on monday to see about getting a new harness. if not, its either ebay, or a junk yard i guess.
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Old 07-27-2013, 07:21 PM
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here are the corroded wires...



found the part number for the harness, so im going to go to the dealer, and order it. gonna be a 100ish dollar blow to the pocket.
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Old 07-27-2013, 07:42 PM
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just resplice yours ??
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Old 07-27-2013, 08:37 PM
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just resplice yours ??
Worth a shot
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Old 07-27-2013, 08:38 PM
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just resplice yours ??
ive given that a though. i think im going to re-wire the entire thing. using the heat shrink butt connectors. that way it will basically be a brand new harness.

if that doesnt work, ill buy a new one.
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Old 07-27-2013, 09:21 PM
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i didn't know you could buy a butt connector with heat shrink tubing already around it. what a good idea.

3M Heat Shrink Butt Connector Kit 140 Piece: Amazon.com: Industrial & Scientific 3M Heat Shrink Butt Connector Kit 140 Piece: Amazon.com: Industrial & Scientific

http://www.harborfreight.com/30-pack...ors-66729.html
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Old 07-27-2013, 09:51 PM
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Originally Posted by dhvaughan View Post
i didn't know you could buy a butt connector with heat shrink tubing already around it. what a good idea.

3M Heat Shrink Butt Connector Kit 140 Piece: Amazon.com: Industrial & Scientific

http://www.harborfreight.com/30-pack...ors-66729.html
yeah thats what those butt connectors are in the pic above. just didnt have a heat gun to shrink the tubing.

as stated, gonna re-wire it, and hopefully itll take care of the issue. if not, to the dealer it is!
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Old 07-27-2013, 10:08 PM
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Don't need a heat gun, just use a lighter.
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Old 07-27-2013, 10:09 PM
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Don't need a heat gun, just use a lighter.
That's what I use. Just be careful not to set it on fire. (don't ask.)
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Old 07-27-2013, 10:20 PM
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Eh I have a heat gun.. easier to use.. and not chance of fires. ;-)
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Old 07-27-2013, 10:22 PM
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Eh I have a heat gun.. easier to use.. and not chance of fires. ;-)
Yes there is.
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Old 07-28-2013, 10:15 AM
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Eh I have a heat gun.. easier to use.. and not chance of fires. ;-)
Where's the fun in that?
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Old 08-14-2013, 09:45 PM
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Quote:
Originally Posted by redneck_ram View Post
My buddy gave me his trailer wiring harness off his 99 1500. Got it installed and the reverse lights are still coming on with the brake lights. Hmmm...
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Originally Posted by beginningjockey View Post
^check all the grounds RR. Sounds like you are missing one - had the same thing happen.
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Originally Posted by redneck_ram View Post
There is only one ground that I disconnected.... well 2 actually. The I ne that goes to the trailer harness (which has no effect on anything but the trailer side) and then the bed to cab ground. Its all tight and grounded properly

Any other sections to check?

All fuses that deal with that stuff are good. So im at a loss.
.....................................

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Originally Posted by beginningjockey View Post
What year is your truck? Same year?
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Originally Posted by QuadCabLuv View Post
Sounds like a shorted bulb socket. Are they all in good shape? With someone holding the brake pull out one bulb at a time and see if the reverse lights go off.
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Originally Posted by redneck_ram View Post
Truck is a 2001. Harness is the same from 98-2004
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Originally Posted by redneck_ram View Post
The sockets are in good shape so far as I know.

How would I go about replacing the socket? Just splicing in a new one?
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Originally Posted by redneck_ram View Post


So heres a vid of what happens when a reverse bulb is unplugged. However this only happens when the trailer tow harness is connected. If I completely unplug the trailer harness and just plug in the main harness it doesnt do this.

This also only happens on the drivers side. Now... when I turn the parking lights on thry come on, but as soon as I hit the brakes, the drivers side goes completely out. But again only when the trailer harness it plugged in. So im thinking it has to do with the tail light wiring after the trailer harness (socket side)

Thoughts?
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Originally Posted by redneck_ram View Post
hmmm ya know what.... are the sockets side oriented? im wondering if the socket harness on the drivers side, is supposed to be on the passenger side, and vice versa?!?!
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Old 08-14-2013, 11:56 PM
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Use your turn signals to verify correct placement.
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Old 08-14-2013, 11:56 PM
 
 
 
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