tach and speedo wires on ECU not getting power, help

[theianmcdougall]

Car
1991 s13
-redtop swap

car came with ditigal cluster, and speedo and tach have never worked

fuel, water temp, etc work

i check the terminal's on the ecu with a 12v test light and got nothing

what do i do?????



please help,
thanks

[theianmcdougall]

comeon im sure someone has had a problem like this before

[wangan_cruiser]

locate the harness behind the cluster and do a continuity test from the plug that connects the dash harness to the ecu.

i had a prob before that my tach wont work and it turns out to be solder broke on me lol

[theianmcdougall]

but wouldnt there be no tach power behind the cluster if theres no power from the yellow/red wire on the ecu