240 Help, Tacho not working after taking out cluster and re-installing
I recently decided to take out my cluster and swap over the face plates from a donor cluster that was in a near mint condition but was busted and from a different year model(completely different circuit board on back). So I did the swap (I followed Volvo Dave's guide online on how to take it all apart) and I've put it all back in the car with all the wires in the correct places (not the first time I have taken it out and put it back it with no issues before hand). But now the rev guage just doesn't work at all, I've double checked that all of the wires are back in the right spot and jiggled them around to no effect. Would any of you guys have any clue as to why it's decided to stop all of a sudden.
Any help at all will be appreciated
Car is a 92 auto 240