Originally Posted by Nightfire
I dont need a tach really, but I want one you know? My moms car doesnt have a tach and shifting is easy to do it by hearing, same with my truck, but I just want a tach.......and I found the solution. Found a battery that has split volts, one side 6v one side 12v
Still won't work tho, it uses the ign system is still 6v, it in theroy will read half the RPM's you have. Hooking up a dual volt battery to the ign system through the tach, won't do anything because it reads basicly how many times it hits #1 I think, there is no connection through the battery, only the ign readings and ign system. you might think about a mech tach, if you are staying 6v, if not, wait until you switch to hook it up.