Ricko1966
Full Access Member
- Joined
- Apr 11, 2017
- Posts
- 5,446
- Reaction score
- 8,684
- Location
- kansas
- First Name
- Rick
- Truck Year
- 1975
- Truck Model
- c20
- Engine Size
- 350
Key off batteries will be isolated, you only need 14 or 16 gauge wire. The wire and fuse will be your amperage limiter you can't draw anymore than what 16 gauge wire will pass.Essentially your strain on the existing truck system will be about as much as a pair of driving lights. Relay 30 to truck battery + 87 to welder battery+ 85 to something hot when the trucks running 86 to ground. Yes the voltage will tell you if you're charging,charged,or low.And truck frame can be ground. This is almost identical to a factory dual battery set up is.Busy biab.