valhalla360 wrote:
Amp usage (or even parasitic loss) is not particularly relevant to tail lights when driving as the alternator simply replaces what you use.
Absolutely true! What was happening to me, was somebody (Ford Chassis or Jayco RV body) cheaped on the wiring. The incandescent lights for Stop/Tail/Turn weren't all that impressive. Then, I plugged my toad in with its incandescent towing lights, and the whole deal kinda fell flat.
I could have used Relays, New Wiring, various other options. I found that replacing the RV's lights with the Bargman LED type, and getting little Maxxima trailer lights for the toad, fixed it all up. Brighter, and easier than modifying everything else.
Our first Class C also had the double incandescent lights on each side. It could ALSO support the Toad the way I had that one wired. The Front and Rear lights came on for Brake or Turn, side marker, tag and dash lights. It had good enough wire to support all that, all incandescent. At least in that case "They don't make'em like they used to."