John- On my Landau, there is a connector for the turn signals high up in the steering column. At times, it would lose contact when making a turn.
The cover for the steering column comes apart and I put put the connector together and then used a tie-wrap to hold it. It is under stress from the weight of the harness.
Hope this helps.
The 12 volt fuse box, the fuse for the right middle lights (#2, a yellow wire) provides power to the water pump switch on my diagram.
Owners manual for Landau is available here. Owners Manuals - Coachmen RV