I was going through the wiring on the 4runner when i came upon this extension plug.



It was connected between one of the main plugs on the steering column.


It is well made and not something rigged. It looks like a straight across plug except one circuit is cut and it had a male and femal spade connector crimped on.

 

That is an aftermarket plug harness for an alarm system. Usually there is more wiring there, and it appears as though the two wires that come off are for the ignition kill. If they are just looped together, the previous owner had done that to by pass the alarm.

If you truck doesn't have an alarm anymore, just take that subharness out and plug the factor harness back in.

 

Thanks. I did that. That would make sense why my horn doesnt work anymore, so i guessing it will now.

 

your ignition switch has zero to do with your horn. In fact, those wires don't even get remotely close to the horn lol. The horn is wired down through the turn signal stalk and subsequent wiring, so check that.

 

yeah horn still doesnt work.

 

Make sure the horn is plugged in at the horn it self, and if it still doesn`t work, then remove the steering wheel and check the horn contact, they wear out over time causing the horn not to work.

 

I just found that same wiring on my truck. Glad this thread was posted b/c I was wondering the same thing.

Jamie