7 way trailer wiring

[recian]

I'm considering selling my mega cab to my parents who recently bought a horse trailer and need something bigger to tow it. This trailer even dwarfs my MC surprisingly. It's a 7 way with brakes. My 06 MC has the blue plug behind the dash for the controller but 4-way wiring hanging down at the bumper. I can get an a/m controller for about $55 but I'm wondering what I have to do at the bumper side to get the 7-way wiring. Are there blank plugs already there since the wiring is in the dash for the controller?

 

[HemiLonestar]

No, need this: p/n 82207253AB

 

[korby05]

It's an 06 and it doesn't have the 7 pin plug? That's very odd because you say you have the blue plug under the dash. I have an 02 and I have both a 4 pin and a 7 pin in my bumper. The 4 pin hangs under the bumper where as the 7 pin is built into the bumper.

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[HemiLonestar]

It's an 06 and it doesn't have the 7 pin plug? That's very odd because you say you have the blue plug under the dash. I have an 02 and I have both a 4 pin and a 7 pin in my bumper. The 4 pin hangs under the bumper where as the 7 pin is built into the bumper.

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Not necessarily. My 03 didn't come with tow package (just the 4 flat under the bumper) but I have the brake controller plug up under the dash. I used the kit above to add 7 pin.

 

[korby05]

Not necessarily. My 03 didn't come with tow package (just the 4 flat under the bumper) but I have the brake controller plug up under the dash. I used the kit above to add 7 pin.

Ah that makes sense. I totally forgot that the tow package is a separate option.

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[Wilnel]

my 08 didnt have it either, it did have the hitch tho..odd.

 

[HemiLonestar]

my 08 didnt have it either, it did have the hitch tho..odd.

But was it a factory/oem hitch? Very easy to add if ti wasn't built with it. Only way to know for sure is run your build sheet.

 

[recian]

The late model 2500 and 3500 the hitch is the rear frame so it'll always be there. Mine has the hole for the 7 way plug but harness has nothing. Will that kit truly be plug and play along with a TBC? No configuring or anything. Looks like it's got a couple extra wires.

 

[HemiLonestar]

The late model 2500 and 3500 the hitch is the rear frame so it'll always be there. Mine has the hole for the 7 way plug but harness has nothing. Will that kit truly be plug and play along with a TBC? No configuring or anything. Looks like it's got a couple extra wires.

The bar yes (1500 is the same way) but not necessarily the receiver, that was what I had to get. The kit is plug and play for third gens. Side effect was that I ended up with an extra 4 blade underneath lol. You'll just have to run some wire from the back to the front and into the cab.