Ford Factory 7way (RV) plug ?
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Senior User
Joined: Oct 2003
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From: Bishopville, MD
Ford Factory 7way (RV) plug ?
I replaced the 4way flat plug with the Ford Accessory 7-way round plug on my 2004 Ford Heritage SCAB 4.2. Everything works except the trailer battery charging circuit. I have checked all the underhood fuses that are indicated in the owners manual. Am I missing a fuse or switch.
Thanks
Thanks
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Joined: Oct 2003
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From: Elk Point, Alberta
On my supercrew, the charging circuit is live as long as the ignition is in the "on" position.Is this truck equipped with factory tow package? If it is the charging relay may not be in the fuse box under the hood. All factory tow package trucks come with two relays and a harness in the glove box, 1 relay is for the brake controller and the 2nd relay is for the charging line to the connector at the hitch and the harness is to connect your brake controller to the truck via a harness next to the steering column. If your truck is not factory towing, then you will need to add the charging circuit to the connector at the hitch. Hope this helps!
Goon
Goon
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From: Bishopville, MD
I bought the brake controller harness and it pugged in to the dash fine and I have brakes at the trailer. I will see which relay I am missing. I thought that I looked and they were all there. I do not have the OEM tow package. Check out my gallery for pics. Thanks so much for the help.
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Senior User
Joined: Oct 2003
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From: Bishopville, MD
I checked my underhood fuse and relay box and i am missing the charge relay for the trailer system. Thanks for steering me I checked the fuses which I have but, not the relays. Thanks I will be visiting the dealership as they look to be unique ford relays not a bosch standard five or four plug.
Junior User
Joined: Oct 2003
Posts: 78
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From: Elk Point, Alberta
I'm not 100% sure but the charging wire may not be in the harness if the truck is not factory towing package. You may need to add it in, which is now big deal, I had to do that with my old Explorer. I would get the relay that you need and try it, the wire may be there.
Goon
Goon
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