Hi, I'm just after some megasquirt help, My megasquirt is up and running without edits but I'm struggling to get my rev counter reading anything, do I need any resistors in the circuit or anything? It's an st170 engine and mk2 xr2 clocks

Cheers

http://www.brumster.com/articles.php?article_id=10

Dunno if this would work for you, but it works perfectly on my mk1 xr2 rev counter with omex 600 ecu output. Got an auto electrician to adapt a standard relay as per instructions. He said it was a piece of piss to do. (Way beyond me though)

Or you can buy a convertor from omex or emerald...

HTH