As the title says, my tach is not working. I recently just fixed my speedometer to get it to move and work, but I still don't have a tach. I've been looking thru wiring diagrams and the fsm, but I'm still unsure of where to start looking for an issue. My car is rough so I wouldn't put it past a stupid broken wire or something somewhere. Where does the tach get it signal from? I know there's a pin for it on the ecu if I'm not mistaken. Just need some direction so any input would help.