i would try adding ground all over, from chassis, to engine, engine to motor motor mount motor mount to fire wall fire wall to a non electrical alternator bolt, and then back to chassis. also use starlock washers to make sure you have good connection.
had a similar problem on my vehicle, added...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.