Brake light wiring help

Woodwharf wrote:
Hi I recently have had to install new brake lights on my 1983 fleetwood southwind Motorhome and I'm having trouble figuring out what the different colored wires are. I know the yellow wire on driver side and green wire on passenger side are for the turn signal and I'm assuming the black wire on each side is ground. But I also have 3 white wires. And that's where I'm getting confused. One of the white wires is thicker gauge then the other two. Could this thicker gauge white wire be for the brake light itself? Or is this the reverse light? When my friend is following me she says the light are dim and hard to see in the daylight. So if anyone has any input on this I would greatly appreciate. Thank you in advance.

Woodwharf,
I'm a bit confused here. When you say you had to install new BRAKE LIGHTS, exactly WHAT did you need to install? I mean, did both brake lights go out on your coach, at the same time? Let me ask you, do you have AMBER turn signals or RED ones? If your brake lights were not functioning, it's highly possible your turn signals weren't either.
But, we need a bit more info on just what you mean by needing to replace the BRAKE LIGHTS.

If you talking about the tail lights on your coach, again, if you have Amber turn signals, then you'll have a totally separate set of lens's back there for brake lights and, that means more wires. But, if your turn signals are RED, then you'll have only three wires for each side. One wire for tail/marker lights, one wire for turn/brake, and one possibly for ground. Need more info.
Scott