I feel like I should have figured this out by now, but I haven't, so here I come!
We have a 2013 Vista 35B. All electrical systems had been working fine. Bought a Blue Ox tow bar and had the installer build a wiring harness for us to connect to our toad. The harness lasted about 3 months and then fell apart in grand fashion. Sparks and smoke and stuff you would hope not to see
We have since replaced the harness and all is good with the toad (all lights work), but the Vista left side running lights, left blinker, and left brake light stopped working. Everything else seems fine. Checked all fuses and bulbs are fine. Don't know enough to trouble shoot beyond this. Thoughts?