[Colin Harmer]

I am putting a new Stack 430 Tachometer in my 82 SC and all seems OK except for the fact that there is not readout on the tach! I was hoping to use the factory harness and not have to run a line back to the low side of the coil, but that seems to be my next step...But before I do, I thought I'd see if anyone had any information...

Here's my quandry. I have connected the tach to the black/vio wire that shows as the tach output from the wiring diagram. In the original configuration there is also a white/red wire that goes to the RPM limiter and it also connects to a "TD" post on the back of the original Tach. When I check the 2 "TD" posts with a meter, it would appear that the two are bridged on the original tach.

Should I try to bridge them with the new set up?

Any information would be a huge help!

Thanks in Advance....

Colin