[urq] Coil-On-Plug in '84 ur-q Tachometer Feed?

[Michael Hopton]

I am finally motivated to complete the coil-on-plug engine
conversion in my '84 ur-q. I had a 3B setup working perfectly
but for some depraved reason decided to convert it to coil-on-plug.
During the conversion an RS2 turbo, exhaust cam, MAF 
injectors and 944 turbo intercooler were added. So it is finally 
coming together.
 
Any ideas on how I get an RPM signal for my '84 ur-q analog 
tachometer from an AAN coil-on-plug engine/wiring loom? Is
the tachometer signal pin 40 on the ECU any good?
 
cheers, Mike