mikemar

Does anyone know what the exact outputs are from the trailer electrical connector? It is a 7 pin output but I only use 4. I was curious if one of those connectors is for backup lights. I have some backup lights I would like to connect but dont want to have to run a wire to the top of the truck to splice it in. thanks for any help.

salimshah

mikemar:

The problem is with the burnt light sensor [which monitors expected load based on working lamps] and even with proper breakout, you will not be able to add extra lights [unless you are ok with lit up dash]. Lexus requires an electronic module to isolate the trailor electrical load.

The hitch connector break out is standard and search on the net or visit to U-Haul can get you what you want.

Salim

mikemar

Well according to the standard outputs for the 7 pin connector, the center plug should be backup lights but I get not voltage to that connector when the backup lights are on. Does this mean Lexus does not make that conection? Or is there another wire or fuse I need to add somewhere?

mikemar

Anyone? No ideas? Help me please.

Tammy

Do any of the seven points switch on 12 volt with the backup lamps? Is the connector beyond an electronic isolation module?

mikemar

I couldn't find a connector that changed voltage when put in reverse. I was trying to find a wiring diagram that showed the actual wiring so I could check it. I think there is a pigtail somewhere that the tow hitch wiring gets plugged in to but I do not know where that is or have a pin out for that either.

Tammy

With the isolator module attached, there might not be a backup lamp active.

It's not needed to qualify for the trailer lamps, since most trailers don't have backup lamps. The brakes, flashers, signal and running lamps are required.