Hi Rick! :waving:
Rob has it backwards. the resistor is bypassed upon startup, and then after a couple seconds power is diverted through it. This gives the pump full power for startup, then cuts back on the power for running (originally it was supposedly a way to quiet the pump down). If only the resistor is bad, the truck should start up, then die after a second or so.
It sounds as if there's a short in the system. :dunno: Both wires might be toast by now. look for any wires that might be touching the exhaust. If you've already got a wire in for power, you're halfway there. now just add a switch and you'll have an antitheft device. :D
water pump should be the easy too. :thumbsup: I did one in under an hour while stranded in a rest area parking lot. :banana: