Fummins and Fuel shut off solenoid
 

I have had my fummins running and driving about a month now. Still tweaking things every day stage. I was looking at the dodge wiring diagrams and see it should be 10.5v into the shutoff solenoid and I am running about 14.3v Is this a concern? how long can I run it like that? Can I put a ballast resistor in there, and if I should what size/rating?

If you need it, 88 F350 (was a idi 7.3) with a 1993 1st gen 12 v and gutrag trans.