Did a search for help with fuel solenoid and relay, some info but not much. What's the latest info for the "better" solenoid from Cummins? Also would like parts #'s for that part from Cummins,rubber boot for same and relay part # for relay from Radio Shack. Solenoid on my "96, 58,000 miles seems to be acting up. Engine won't shut off with key turned off. TIA jps