factory tach with 5.3

[1972k10shortbed]

Originally Posted by XwalkerX

L33 is just the engine code for the HO 5.3L.

Also I'm an idiot and I figured it out. I was running a tach wire to ground when the tach is already grounded in the cluster.

Everything works as it should.
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I have tried to hook my tach up with my 5.3 and also my stock 350 truck. Neither one worked. Ive never hooked one up properly before. Any help would be appreciated.
Thanks