need help wiring 7pin

[wildbill23c]

So you want a 7 pin plug, but only need the function of a 4 pin? As in you aren't running a charge line or brake controller line?

After several wiring problems with a 4 pin becoming unplugged do to lose connections, I will not use a 4 pin flat plug anymore. Plus all my trailers are wired up to a 7 pin RV plug as they plug in and the lid on the plug retains the plug in the receptacle to avoid dragging a plug and wiring. Right now I'm not sure what all I will be running, a 7 Pin plug allows adaption to any other plug, which is why I run them so in the future I'm already setup for whatever I need in addition to all of my trailers already being wired with 7 pin plugs. In the future I will in fact be installing a trailer brake controller, but that's going to be a year or 2 from now when I get the little travel trailer setup with trailer brakes. I'm doing the install and want it done right the first time rather than installing a 4 pin flat then deciding later that I should have installed the 7 pin in the first place.

 

[adsm08]

The diagram you want is in the Tech Library and should come with the plug kit as well.

 

[wildbill23c]

The diagram you want is in the Tech Library and should come with the plug kit as well.

That's what I thought, but I can't seem to find it to save my life LOL. I know its gotta be there somewhere but the one link I tried for trailer wiring says the page can't be found, the other trailer towing link gives nothing for the lighting LOL. I'll keep clicking things till I find it.

 

[adsm08]

Found it. Bottom of the page.


http://www.therangerstation.com/tech_library/TrailerLights.html

 

[wildbill23c]

Thanks, that's the one I was looking at but didn't know if I had the right one for sure LOL. I printed it off a week ago. At least I was looking at the right one just didn't have a clue LOL. So in order to do that all I have to do is just tie into the existing wires with wire taps, and then when I get ready to do my trailer brake controller just run the wiring back for it and the auxiliary wire for aux power as well?

 

[adsm08]

That's what I did. It is ugly as sin and all my co-workers make fun of me but I was moving and needed a 7-pin hook-up the next day or I would have no lights on the trailer and gramps wouldn't let me take it without lights.

 

[wildbill23c]

Adding the trailer lights tapping into the existing wiring in the back won't overload anything will it? I've always had vehicles with a "Tow Package" that had some sort of wiring that fed from up front somewhere. Looks pretty dang simple just too cold right now to try to work on it. Thinking that will be my spring project. Found a 7 pin and 4 pin receptacle for $15 so I think I'll pick it up so I have it on hand when I get ready to do it.

 

[adsm08]

I pulled a tail light and scotch-locked onto the wiring right there. Haven't had an issue yet. If you are really worried, run relays.

 

[wildbill23c]

Hmm, I think I'll do that, instead of trying to tie in down lower in the wiring. I don't think it would be a problem then if you haven't had an issue doing it that way. Stupid me when I sold my ford ranger didn't take the trailer brake controller out of it, so I'll be picking a new one up here eventually before I do any towing of the travel trailer which right now doesn't have brakes I'll be upgrading to brakes on it as well.

Maybe this whole older vehicle idea I have will work out great, less electrical mess to deal with and easier for me to work on. This trailer wiring isn't new to me, just never have had to wire in like this before I've always had a plug and play type setup.

Thanks again

 

[85_Ranger4x4]

Resurrecting an old thread, but I can't seem to find anything on a search that leads me to an answer. I'm getting ready to install a 7 pin wiring plug on my 84 Ford Bronco II, as the plug is heavier duty than the little 4 pin plugs that always seem to come unplugged somehow, anyhow, is there a diagram somewhere that says what wires go where on the rear of the bronco 2 so I know how to connect the plug wiring? I don't really want to pay a shop $90 to have it done.

I just got a t connector from the local parts store and just matched the wires by color.

Scotch locks are better used for traction than electrical connections.

 

[alwaysFlOoReD]

I had to google scotch lock. I know them as suitcase connectors. They are OK for a quick and dirty fix but they weaken the wire. If the wire isn't located properly [tie down/back] the wire can break.

Richard

 

[85_Ranger4x4]

I had to google scotch lock. I know them as suitcase connectors. They are OK for a quick and dirty fix but they weaken the wire. If the wire isn't located properly [tie down/back] the wire can break.

Richard

They also open it up to corrosion. Not something I want to plant in my trucks main wiring harness.

We have a schitzo trailer that needs rewired because it is full of them.

 

[Snoranger]

Seal them with liquid electrical tape or silicone when they are first installed.. You'll never have a problem with them after that.

 

[alwaysFlOoReD]

I've noticed the corrosion too, especially on old/er trailer related wiring.
I have seen the silicone trick done on wiring for fire trucks, that would lead me to believe it's a good system. I don't have personal long term experience tho.

Richard

 

[85_Ranger4x4]

Seal them with liquid electrical tape or silicone when they are first installed.. You'll never have a problem with them after that.

Or just solder the connections with heat shrink so you don't have big glob of crap on your harness.