Trailer wiring?
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Mountain Pass
Joined: Oct 2005
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Trailer wiring?
I am having a problem getting two wires to work on my trailer wiring. The battery charge and the Auxillary are not working for some reason. I have already checked under the hood at the fuses and relays and all check fine. I know the rest of the wires are correctly wired. Does anyone have a wiring diagram for the trailer wiring? Or is there another way I can get these wires to work? 2001 F350 DRW 4WD
Last edited by novalovr66; Aug 25, 2006 at 11:42 AM. Reason: Vehicle make, model
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From: colorado
you need to access the under hood fuse box (drivers side near the fire wall behind the air filter housing) you need to put 2, 30 amp maxi fuses in the box (locations 16 and 28) and 2 relays in the small relay box right next to the fuse box (they are not there from the factory)
Hotshot
Joined: Jan 2002
Posts: 17,988
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From: La La Land
Nova,
I know you said everything "checked good" under the hood, but....
Did you use the factory "pigtail" adapter from the truck's wiring to the trailer plug? This is the one that has both the four-pin and seven-pin plugs.
If so, then be sure that you have the "doghouse" relay box installed. This came with the trailer wiring kit. It is the one pictured below without its cover.
BTW, what do you expect to be on the "AUX" pin when you're done?
I know how frustrating this can be, as I went through this same thing when I installed my rear plug, too.
Pop
I know you said everything "checked good" under the hood, but....
Did you use the factory "pigtail" adapter from the truck's wiring to the trailer plug? This is the one that has both the four-pin and seven-pin plugs.
If so, then be sure that you have the "doghouse" relay box installed. This came with the trailer wiring kit. It is the one pictured below without its cover.
BTW, what do you expect to be on the "AUX" pin when you're done?
I know how frustrating this can be, as I went through this same thing when I installed my rear plug, too.
Pop
Last edited by SpringerPop; Aug 25, 2006 at 12:59 PM.
Thread Starter
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Mountain Pass
Joined: Oct 2005
Posts: 100
Likes: 10
Originally Posted by wlihntr
you need to access the under hood fuse box (drivers side near the fire wall behind the air filter housing) you need to put 2, 30 amp maxi fuses in the box (locations 16 and 28) and 2 relays in the small relay box right next to the fuse box (they are not there from the factory)
Last edited by novalovr66; Aug 28, 2006 at 07:15 AM.
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Thread Starter
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Mountain Pass
Joined: Oct 2005
Posts: 100
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Originally Posted by SpringerPop
Nova,
I know you said everything "checked good" under the hood, but....
Did you use the factory "pigtail" adapter from the truck's wiring to the trailer plug? This is the one that has both the four-pin and seven-pin plugs.
If so, then be sure that you have the "doghouse" relay box installed. This came with the trailer wiring kit. It is the one pictured below without its cover.
BTW, what do you expect to be on the "AUX" pin when you're done?
I know how frustrating this can be, as I went through this same thing when I installed my rear plug, too.
Pop
I know you said everything "checked good" under the hood, but....
Did you use the factory "pigtail" adapter from the truck's wiring to the trailer plug? This is the one that has both the four-pin and seven-pin plugs.
If so, then be sure that you have the "doghouse" relay box installed. This came with the trailer wiring kit. It is the one pictured below without its cover.
BTW, what do you expect to be on the "AUX" pin when you're done?
I know how frustrating this can be, as I went through this same thing when I installed my rear plug, too.
Pop
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Postmaster
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From: colorado
Originally Posted by novalovr66
After looking under the hood again the fuses are all there however I am missing one relay (the one furthest from the firewall). Anyone know where to pick one up?
ps. check your e-mail i sent you that schematic
Thread Starter
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Mountain Pass
Joined: Oct 2005
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Originally Posted by SpringerPop
Nova,
If so, then be sure that you have the "doghouse" relay box installed. This came with the trailer wiring kit. It is the one pictured below without its cover.
Pop
If so, then be sure that you have the "doghouse" relay box installed. This came with the trailer wiring kit. It is the one pictured below without its cover.
Pop
Thread Starter
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Mountain Pass
Joined: Oct 2005
Posts: 100
Likes: 10
Well after the relays were put in there is still no power to either wire. I am wondering if my brake controller might have something to do with it? Not sure that it is wired right, I know it works except when I push the slider to apply the brakes manually it doesnt apply any brake voltage. I will have to try and trace the wires back to see if there is a break in my wire somewhere. Thanks everyone.
Thread Starter
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Mountain Pass
Joined: Oct 2005
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Update.
Ok, both relays check good, I am now getting power to the AUX wire. But still not getting anything to the Battery recharge. On another truck when you turn the ignition key on the relay closes, when you start the truck the relay temporaraly opens and when the truck starts the relay closes again. On my truck the relay closes when the key is turned but when you start the truck it stays open. Not sure why. Anybody have any ideas as to why it does this?
Thread Starter
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Mountain Pass
Joined: Oct 2005
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Originally Posted by wlihntr
if you cant figure it out i have a PDF of the wiring schematic...send me an E-mail and i will send it to you