My 1978 Fiber Stream
seems to have standard color code.
White = Ground
Green = Running Lights
plus Side Marker Lights)
Red = Left Stop / Turn Signal
Brown = Right Stop / Turn Signal
These are the wires that are in the plastic conduit that runs underneath, on the curbside frame rail, from the front to where it enters the closet (Thru the floor). The 1st thing I did after I bought mine was install new tail light
fixtures, with Back-Up lights
. In order to activate my Back-Up lights, I had to fish a new Yellow wire thru the conduit.
Yellow = Back-up.