I just bought one of these for my WR, (pre-wired), and see theres no red wire in the assembly. The rear WR light only has a ground, yello, and blue wires. While the switch has a yello and blue only. Does anyone have any experience using the stock rear light? They told me I would be able to hook it up, but so far, no "brake" light. BD included no wiring direcrtions, just the installation of the switch. Thanks for any help guys.