Think about fusing it if it runs into the cab. My stock alt only puts out about 35-40 amps, I put a 30 amp fuse on it two years ago, haven't had to replace it yet......except for the time I put the amp meter back in with the batt cable on. I like fuses, as long as I keep extras. It only takes once to burn one down


64 & 66 GMC long fleetside 4x4
Cartwright, OK