Re: 1976 Ford RV Truck Electrical
well, motorhome/rv's might be different depending on how they use the second battery. Do you know if your vehicle has a battery isolator? (wiring diagram) It may have no isolator and just wire the batteries in parallel. Then you would have the alternator lead to the battery attached to the battery side of the starter relay.
NOTE: the wire that goes to the battery connection is not a regulator wire. It is a fusible link. That means that the wire is your fuse for that circuit. It is meant to burn out is too much current is used on that circuit. If a regular wire is used it could overheat and possibly cause a fire.
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