Rear light harness help (1 Viewer)

[ratpin]

So when I got my fj40 a previous owner had installed some trailer lights as tailights. These lights used the same signal wire for turn signal and brakes. Im switching to oem ‘77 lights and am trying to figure out how to wire the signal and brake lights to operate independently. This truck also has had a GM column installed.

heres what im dealing with for leads currently.

4 green - running lights\markers/license plate lights
2 blue - reverse lights
1 black - left signal/brake
1 lt green - right signal/brake
2 white - grounds?

 

[EmanC]

edit: Coolerman has a great breakdown on how to do this. Brake Lights

 

[ratpin]

That does seem simple. What complicates things in my application is the GM column harness. if you are familiar with these, everything runs through this additional harness plug making things a little less straight forward