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80SPORT · 01-01-2009, 12:21 PM

Last year for factory tach was 1981
Tach was not avail w diesel pu
Tach is powered up on own circuit;pink is ign +;brn to tach term on dist via a capacitor;black is ground.
If your tach dash has voltmeter and electic oil gage you can use a 1981 wiring diagram;if you have mech oil gage and ampmeter your dash is pre 77 and will not work.(i assume your truck has voltmeter/oil gage from factory....if you have only warning lites you will require a complete harness)

01-01-2009, 12:21 PM	#4
80SPORT Registered User Join Date: Mar 2008 Location: red deer alberta Posts: 777	Re: Need wiring help with Cluster swap. Last year for factory tach was 1981 Tach was not avail w diesel pu Tach is powered up on own circuit;pink is ign +;brn to tach term on dist via a capacitor;black is ground. If your tach dash has voltmeter and electic oil gage you can use a 1981 wiring diagram;if you have mech oil gage and ampmeter your dash is pre 77 and will not work.(i assume your truck has voltmeter/oil gage from factory....if you have only warning lites you will require a complete harness)