need help with trailer plug wiring
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Senior User
Joined: Feb 2007
Posts: 180
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From: Maple Ridge, Canada
All right!!! now I'm getting somewhere (something to test anyway). These are not listed in my manual, and one block has 2 relays (closest the airfilter), the other is empty (closest the fuse box). Do you know what the empty one operates?
Laughing Gas
Joined: Aug 2008
Posts: 823
Likes: 5
From: Dallas, Oregon
The second block should be the ESOF 4x4 controls. If you have 2wd or a manual transfer case, this block will be either empty or non-existent. My 2001 4x4 with manual transfer case doesn't even have a relay box installed for the ESOF.
While I don't have enough information to tell for sure, I am suspecting that your ground is bad and everything else is finding it's ground path through your running light circuit. Try running a separate ground (like a battery jumper cable) from a good clean spot on the trailer to a similar good spot on the truck and see it that changes anything.
While I don't have enough information to tell for sure, I am suspecting that your ground is bad and everything else is finding it's ground path through your running light circuit. Try running a separate ground (like a battery jumper cable) from a good clean spot on the trailer to a similar good spot on the truck and see it that changes anything.
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Senior User
Joined: Feb 2007
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From: Maple Ridge, Canada
I have esof hubs and they are working, so the empty box can't be for those. The box I'm looking at is right beside the fuse box, between it and the master cylinder. the other has 2 relays with part # foab-14b192-aa 9211 b1.
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Senior User
Joined: Feb 2007
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From: Maple Ridge, Canada
Just updating the progress; The two empty relay spots are for battery charge and backup lights, I can install those and hope its all fine (don't know why they would be missing). And as for the running lights wire, it had pulled apart inside the casing right at the back of the plug
. should have got out the testlight first. oh well, its all going to work soon.
. should have got out the testlight first. oh well, its all going to work soon.
Senior User
Joined: Feb 2008
Posts: 355
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From: Happy Valley Or
Thanks for updating the thread. Glad you found the issue. On a side note A friend has a 97 PSD automatic and he blew his running light fuse somehow with the trailer hooked up and his transmission would not shift out of park until it was replaced. Anyone ever hear of this before?
I know I have done the same thing but my truck has never been stuck in park because of the trailer running light fuse.
I know I have done the same thing but my truck has never been stuck in park because of the trailer running light fuse.
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