So the rheostat would have to be replaced with some kind of duty cycle gizmo? Sounds like something I would screw up for sure without expert guidance. Oh well, I liked the idea anyway ..

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma