I just picked up a Autometer 14K ProCycle tach really, really cheap , and I'm wondering if there is anyway to make it work on a V other than using a Copperhead VDI. Since it doesn't have a 4 cylinder option (only 1 pulse or 2 pulse), hooking it up to the pickup wire still gives me double RPM's. I was wondering if a MSD tach signal pickup would work, but I hate to spend $40 more just to try it out. Any other ideas? Thanks.