I have a 95' Lt1 and have a digital 6 plus and lm-1 wideband. I want to hook up the lma-2 so I can use log works. It says on innovates instructions, the tach signal can not exceed 5volts. Well msd box puts out a 12v tach signal it says. How do I hook the lma-2 up on my car? anyone done it?

 

I looked at the manual for it and it's a little vague. It says that the AUX inputs can't go over 5V, but it doesn't say the RPM pulse can't. I think you should go on their web site and post in the forum or just call them to be sure. I bet it is protected for a higher voltage like the Aux Box is. I have the SSI-4 and it is hooked up to the tach output of my ignition amp. I doubt they would limit a tach input to 5V because who on earth would have that?