Just bought a 49-51-55 GMC 1/2-3/4 ton truck. Yes, I don't know exactly since its a little mixed up. Anyway, it has been changed to 12 volts. Only God knows how. The truck starts and runs, haven't got the chance to check at gauges or lights. How can I check it has been properly done. I'm almost willing to bet the truck itself it is not done right.
Thanks for the help
