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Looks solid! ------------------- I think you're on the right track using tinned OFC for exterior wire, but saving a few bucks using raw OFC for interior. Nothing wrong there. Nice to see another hydraulic crimper user. Only thing I'd add is to mind the lugs you use. Closed ended, tinned copper lugs are the way to go. Solder and crimp lugs are quite different! For heat shrink on exterior wiring: Make sure ya grab adhesive lined. Or, if that's not in the cards for one reason or another, you can get away by putting a thin layer of high temp hot glue over the area, then putting the heat shrink over that and warming until the glue melts and oozes out. Not as cheesy as it sounds, that's all the weather-sealed heat shrink is - just pre-applied for ease of use. I'd also get some wiring loom to add some protection to the cable. Bumps and abrasion can take their toll over the years. Get the woven variety - less apt to trap and hold moisture than the plastic corrugated stuff. ------------------- Other notes: - Don't forget the grommet when passing wires into the vehicle. Butyl putty is awesome for sealing stuff up and excluding salt/moisture long-term. It doesn't cure - stays soft like chewing gum. - Can also consider a pass-thru bulkhead if that's up your alley - Alternator wise, mechman, singer are the favorites. I've used DC power and been happy but that was many years ago. Not sure where they stand now