GQ TD42 using standard ignition-type tacho

[patch697]

Got everything working .. except the tacho. The signal converter is functioning and I have a handheld tacho showing the RPM.

I pulled out the cluster, and dismantled it. I ran a signal generator into it and get nothing. It might need a pull-up resistor. Would be good to confirm if this unit was actually faulty before buying another...

Mate I don't know if its relevant to what your doing but I did find out the Patrol tacho's are quite finicky & ultra sensitive when fitting an after market HEI system.

I use a 1 watt 50k oms veritable trim pot to find its happy place. For around $2 its a very cheap testing tool for you to trouble shoot yours.