moparwedden Well-Known Member Joined Apr 13, 2006 Messages 770 Reaction score 14 Location trenton,ontario,canada Apr 14, 2017 #1 Had my tach hooked up last year too my msd. Worked fine. I have installed a retard box and now it's bouncing all over the place do I need a adapter and if so which one. John
Had my tach hooked up last year too my msd. Worked fine. I have installed a retard box and now it's bouncing all over the place do I need a adapter and if so which one. John