RP4-FD11 with no left audio
This article covers how to fix not having any left side audio when installing an aftermarket radio
using the RP4-FD11
Cause: There was an error in the last production run of harnesses that has both the left front and
left rear negative speaker wires pinned incorrectly in the harness.
This is what an improperly pinned harness looks like:
Solution: Because of the different size terminals the wires cannot be re-pinned. These 2 wires
should be cut from the harness and jumped to the factory harness.
1. Cut the white/black and green/black wires from the harness.
2. Extend these wires and connect them to the wires in the factory harness. The white/black wire
connects to the wire in pin 21 of the factory harness and the green/black wires connects to the
wire in pin 22 of the factory harness.