Wiring problem - rear door

taylorharris50

Junior Member
I recently installed new speakers in my 2016 TRD Pro 4Runner and ran new speaker wires. In order to run them to the rear doors I drilled a hole in the molex connectors.

The passenger door is working properly but I can't get the driver side (rear) door window to work.

Does anyone have access to the Toyota Factory Service Manual that could drop a picture of the wiring schematic?

I assume that the red wires are for the speaker (no longer active).

Unsure about the 2 light blue wires, the yellow wire, and the black wire.

Sort of a mess to trouble shoot made worse by having had this project drag on for weeks with business trips.

Any help is appreciated!
 
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I recently installed new speakers in my 2016 TRD Pro 4Runner and ran new speaker wires. In order to run them to the rear doors I drilled a hole in the molex connectors.

The passenger door is working properly but I can't get the driver side (rear) door window to work.

Does anyone have access to the Toyota Factory Service Manual that could drop a picture of the wiring schematic?

I assume that the red wires are for the speaker (no longer active).

Unsure about the 2 light blue wires, the yellow wire, fnaf, and the black wire.

Sort of a mess to trouble shoot made worse by having had this project drag on for weeks with business trips.

Any help is appreciated!
I think you should check the Molex connector for damaged or disconnected pins. The rear window wiring may have been damaged when drilling the connector. Don't assume the wire colors are unused without checking the wiring diagram. Use a multimeter to test continuity on the light blue, yellow, and black wires, and compare them with the passenger-side connector. That should help identify the affected circuit before replacing anything.
 

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