so if you look at my build, You see i did a cab swap. I just hooked up the battery and everything seems to be working, lights,gauges, but... when i turn the key to "start" nothing happens. it doesn't make a click noise, as if i needed to bang on the starter. One other thing I don't have the gas tank in, would the gas tank connectors break a circuit and not let the truck start?
(just a test run i know it won't run if there isn't a gas tank in the truck, checking to see if the starter would pop)