1974 Duster Build Thread

Update! If you guys didn’t see my other thread, I installed my ready to run 440source distributor yesterday and fired it up... no misfire and sounds great after advancing the timing a bit. It was nice to cap off so many wires and tuck them away in looms: no more distributor plug, ignition controller or wiring, ballast resistor or wiring... much much cleaner... only issue now is my tach isn’t working now! I’ve seen a few magnetic pickup tach adapters... is that what I need? Anyone encounter this problem?