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Home » Public Forums » GMCnet » Trailer Hitch Wiring (time to redo)
Trailer Hitch Wiring [message #264996] Tue, 28 October 2014 12:24 Go to previous message
mickey szilagyi is currently offline  mickey szilagyi   United States
Messages: 273
Registered: January 2013
Karma:
Senior Member
We just installed a Merrell hitch. It went very well. We cut out the center notches in the bumper and used rubber U channel to finish/protect the cut edges. We used the following and it is good stuff, very flexible. We needed just over 12 inches so ordered 2 feet.

http://www.ebay.com/itm/350917787801?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

We now wish to install a 7 prong hitch plug and replace the wiring that goes back to the hitch area. The PO did some odd stuff so we can't tell for sure what is what so we want to start over.

First of all just in case we wish to haul a towd or use a braking system for whatever we haul, is the 7 prong plug the way to go? Is there something else instead?

Secondly, where does all this wiring start up front? Is there a OEM harness or spot where trailer wiring should or does start?

Thirdly, we're assuming we need 7 wires for the 7 prong plug, or at least 6 with a ground to the frame back at the plug. What kind and what gauge wire is recommended? Is there a wire bundle/cable made for just this purpose?

Fourth, we think the wires can be run through the coach interior or partially through the coach as we found a spot behind the generator compartment where wires lead from the interior out the bottom of the coach. Or is there a better way or an original way the wires run/ran? Did coaches come prewired from the factory for trailers?

We don't know at this point what kind of braking system we will install but can we assume the wiring is all the same? It seems that we can install a connector up front, a plug/harness, that we can plug into when the time comes to install electric brakes. We also are aware of surge brakes and assume they do not require any electricity to work.

Any comments about this are greatly appreciated. Please advise if our thinking is flawed or comment on whatever we have forgotten or problems we might encounter.

Thanks, as always,


Mickey 1977 Kingsley, 403, Lansing, MI
 
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