MrSix

Hi, not sure if this is the correct place to post this. Apologies if not. I have a 1980 Volvo 244. It now has a 1JZ-GE and Haltech ecu. Ignition is cop, so the original single colil is no more. I'm trying to use the original gauges, and have been trying to make the tach signal, using a relay coil, ito imitate the old ignition coil. If anyone has done something similar, or has a helpful suggestion or can point me in the right direction. It would be very much appreciated. Cheers Brendon