Any pointers to fix stock 4-pin trailer hitch wiring?

[stonekutters]

My stock trailer hitch 4-pin wiring isn't breathing any life. Per some of the old posts on mud the fuse of the trailer hitch is connected to the rear tail lamp assembly - the fuses are fine and all the rear taillights work wtihout any problems.

Appreciate any pointers on how I can get the stock 4-pin wiring to work!

 

[yeti in ga]

plug and play replacement: 1999 Toyota Land Cruiser Trailer Wiring | etrailer.com

I have been using it for years with no issues.

 

[duggy]

^^^ I have the same but from Amazon. Works great.

 

[Dwight S]

^^^ Same here... I did visit a local trailer and hitch retailer and purchased a mounting bracket to replace the factory one so the plug didn't hang down.

 

[CanadianRockyCruiser]

scrape the old contacts and put some dielectric grease on them! Bring em back from dead!

 

[stonekutters]

Thanks everyone! Let me see if I can revive the old contacts else will buy the new wiring.

 

[billygoats]

also if you follow the harness from the trailer plug, a wire comes out of the loom. This wire is the ground and should be bolted to a grounded bolt. This wire could have come loose/broken. A voltmeter will really help sort out this problem and eliminate/confirm if it is a ground problem.

 

[stonekutters]

also if you follow the harness from the trailer plug, a wire comes out of the loom. This wire is the ground and should be bolted to a grounded bolt. This wire could have come loose/broken. A voltmeter will really help sort out this problem and eliminate/confirm if it is a ground problem.

Ah - good to know, will keep an eye out!

 

[uzj100]

I thought there was a TSB on this as well. I will try the amazon route.

 

[Dwight S]

There is a TSB on this but I doubt Toyota or your local dealer would offer up anything as old as our trucks are now. The Amazon harness is simple to install and works. Had it since I bought the truck and use a trailer several times a year. Never any issues.... so far.