ECU, Wiring, Sensors
User avatar
By Classiccarsrule85
#165336 either the tach went caputs or the tach signal justdosent exist either wires bad or the thing that sends the signal is.....

Here a simple test to do grab a tach from a friend or another cluster with a tach (if you have a tach on its own then wire it up correctly useing the blue wire behind the cluster(I wouldnt cut it i would just seperate the sheilding a bit attatch another wire and hook it up to the tach....)) hook everything up and if you still dont have a signal then take a multimeter to the blue wire on the cluster harness to the blue wire on the dizzy check that and see .....

hope that helps