I just washed the engine compartment of my cucv m1009 and now it won't even turn over and it shows low voltage on the voltmeter in the truck. The glow plug relay shows 24V from booster and drops to 17V when the relay "clicks" with ignition switch in the on position. From what I have read here the "booster" is supposed to drop the votage to 12V at the glow plug relay?? I just replaced both batteries to rule out weak batteries. The GPR is the updated silver round type. Everything worked great up to the wash. Any ideas?