So when I bought this 86' MJ with a 4.0l 5 spd had on Tachometer, I switch instrument cluster but TACH still not working, looking at the engine, I see the distributor is not the original, so, apparently this was changed thus it was not wire to the cluster (this is my conclusion) my question is, is there a wire diagram an one can share and/or, any one know how to connect it?