I HAVE A 2007 ROYAL STAR TOUR DELUXE,I INSTALLED A SUNPRO SUPER TACH II.IN THE SUNPRO PAPER WORK IT STATES THAT IT WORKS ON SYSTEMS THAT DO NOT HAVE DISTRIBUTORS.WELL IT DOES BUT IT ONLY READS HALF THE RPMS.
THE TACH COST $29.00 AT ADVANCE AUTO PARTS,SUNPRO SELLS AN ADAPTOR BUT IT COST IS $50.00 AND PRESENTLY OUT OF STOCK.I CAN MAKE THE ADAPTOR FOR ABOUT HALF THAT COST PLUS SHIPPING AND TAX.
IF YOUR INTERESTED I CAN BE REACHED AT frank6087@hotmail.com
I THINK THIS SHOULD WORK ON VENTURES ALSO BUT IT HAS NOT BEEN TESTED ON ONE.
REMEBER MY SYSTEM IS TRANSISTORIZED ,4 COILS,AND NO DISTRIBUTOR