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Trailer Plug Wiring
Contributed By: Michael Baxter
>> I have two trailer plugs on the back: a heavy duty 7 spade and a regular large DIN style with 6 pins (plug is about 3/4" dia.). <<
>> The reason that I am bugged is that we got a tent trailer last weekend. I
believe it uses all 6 connections as below:
Dan, I can provide the standardized pin-out for the 7 pin spade (actually 6 spades with one big round center pin) if that's the one you decide to go with.
The industry seems to be settling on the 4 pin flat and the 7 pin spade (called RV plug) as the two standards but, some big 5th wheels require the 9 pin plugs.
Does your tent trailer have separate turn and stop indicators? Pins 1,2 & 3 above are usually combined. Like left turn/stop and right turn/stop. If it does, you'll need an adapter on your Jeep. Here is the industry standard pin-out:
#1 = ground
#2 most likely won't be used in your case. I would use largest wire possible on #1 and especially #4. I managed to squeeze an 8 gauge wire on the #4 terminal on the tow vehicle side. It reduces the voltage drop and ensures your trailer battery will charge while you're underway.
I can offer more advice on trailer wiring if you need it. Just contact me via e-mail. Anybody else interested do the same and I'll copy you in on any correspondence.
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