MoTeC Global Forum

Hello
i have a question about m4 how do i connect my orginal rpm meter to the motec box i am using 2 channels for ignition and one for boost control and one for fuel pump. The rpm was connected to the old coil that iam not using. I have put in 4 coils.

sorry for my bad english

Regards
andreas

So your coils will be driven by Ign 1 (pin# 34) & Ign 2 (pin# 33). This will leave you with Aux 1, Aux 3 & Aux 4 outputs available so this means you should have one spare to use to drive the tacho.

If you want to keep an Aux output spare then another option would be to use an 'ignition combiner' such as this: http://www.motec.com/filedownload.php/a ... docid=1203