Can’t provide constructive input on the wiring…but why an Ulterra? I’ve yet to talk to someone on a lake that likes it outside of the deploy and stow, when it works. I’ve been stranded on the lake twice now in my brothers, failing to auto-stow when the battery is low. You need to take the side cover off, remove a coupler and ratchet strap the motor up and back…no thanks. I’ll stick to a Terrova.
Had mine 3 years love it. Does it require more maintenance yes but it would never go without it. If your battery’s are dying you should have them checked before the season, if you are draining them during the day you need bigger batteries or a bigger trolling motor. If you don’t like preventive maintenance I would not purchase one of these either.