Converting stock trailer plug to regular 6-pin?

[montana77]

I was given some misinformation by the local Checker Parts dude, and I cut the plug end off of my '94 Explorer XLT. As it turns out, this was the factory 7-pin plug, and I was supposed to get a "converter plug" to switch over. I'm far beyond this point now (Wires are cut) and need help wiring in the normal round 6-pin. I need to know what to do with the three black ground relay return wires? Any help in this en devour, will save me hours of testing and probably an aneurysm.

Thanks

 

[IZwack]

Typically you can assume that the wiring follows the standard wiring colors (green, yellow, white, brown, and so on...). But if I were you, I'd do a pinout to find out exactly what wire does what. This procedure typically takes just a few minutes and can be done with a voltmeter or a noid light.

BTW I dont think your vehicle came came with a "factory 7 plug". Explorers typically come with the flat 4-pin plug (ground, left, right running). Even if you bought the converter, you still need to wire the rest of the left-over pins (12v, aux, brakes)

 

[montana77]

Indeed, I do (did) have an original 7-pin harness from the factory. Info can be found here: http://www.explorerforum.com/Singleton/web/pages/trailerwiring.html

I need help with the SPDT relays, and the three black ground return wires. I don't know what to do with them, and I'm considering building my own harness which bypasses the relays. . . . I'd like to keep them though, because they provide good protection for the vehicle.

I don't have a clear enough understanding of where to put the ground return wires, in the new 6-pin common plug.