Thread: Adding a tach
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Old 10-08-2011, 12:11 AM   #4
Cramitthefrog
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Join Date: Jan 2011
Location: Carson City N.V.
Posts: 59
Re: Adding a tach

Should be safe, the major issue is the volt/amp gauge of the 70s.
You can find the pin location for your trucks wiring harness that hooks into the back of the cluster online and that will tell you where you need to move your wires for the gas gauge. The tach is a stand alone wiring harness so you will need to run wires from the tach to the distributor and also a ground.
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