hi i have a 84 z28 and the dash wiring was all tore apart well after a few hour and some wiring diagrams i got it 90% done all the lights work the hatch pops two problems the windows dont roll down havent looked at it yet but im sure i can figure it out the problem i have is there is a heavy gauge brown wire coming off the headlight switch and it has a orange wire connected to it both wires are cut and i dont know where they go the wiring diagram dont show this wire in the connector any ideas ill post some pics tomorrow if it helps

 

Did you look here: http://www.austinthirdgen.org/mkport...ody_wiring.gif

Shows a brown wire at headlight switch in that diagram - seems to run from switch to all the exterior lights.

Orange in this diag seems to be main wire for interior lights.

However, orange wires are all the the car for many things. I'm sure there's more than 1 brown wire in the car as well.

 

brown is for the parking and side marker lights and the orange is usually for the interior lights....