Well it seems I have been posting lots of projects lately, I'm just trying to get some done before the weather turns ugly here and the trip to Florida.
As I mentioned earlier the brake lights stop working on the Motor Home. It was peculiar in that the brake lights on the trailer still worked?????
So I looked at the two areas I had been playing with lately, the 2 to 1 trailer light module. The Motor home has the European style tail lights and the trailer has the American style tail lights. (Brake lights are separate form the turn signal lights on the Motor Home). The second area was the circuit breaker plate that I replaced when I found the A/C circuit breaker had gotten hot and melted the plate (see above)
I took the Module wiring apart and found nothing wrong, I used a test light and found nothing wrong, I removed the relay for the stop lights and jumped the contacts and still no stop lights.
So I went looking into wiring that was still in place from the previous owner and did find this.

These two wires are for the ground of all the rear tail lights and the rear marker lights. If I wiggled it I could get the lights to flicker, but the stop lights still did not work. I put this task off for a project for another day. As the wires are cut so close to the plug I want to get a new plug and just clip the wire and create a new plug with no cut. I did recrip the but connector.
So what could it be, I eliminated everything I could think of and the bulbs were just replaced with LED bulbs to reduce the current load.
Mum....lets try an normal 1157 filament bulb.
it works.

It couldn't be the LED bulbs right they are new. Lets test them.

Both of them fail... they only work in the stop light mode but only from the marker connection and do not light at all for the stop light mode. Really strange that they both stopped working. These things were expensive. I took them back to AutoZone and they replaced them.
So here is the new LED in the marker mode.

and here is the stop light mode.

Do not be fooled by the pictures, these things are bright.
I feel really foolish not having checked the lights first, so lets make a visual difference to the Motor Home.
The lenses have been brothering me as they are quit dull.
I took all the lenses of the Motor Home. This is what the stop/marker lenses looked like.

I spent a little time at the buffer and this is a comparison, worth the effort I think.

Here are the turn signal lenses and the backup lenses before.

And after.

And back on the motor Home.

The lights are not on, but I did test all modes and they all work again.