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95-00 Obs Chevy. How to wire factory 6.5 diesel cluster for LS Cummins 454 swaps.
Use this video to make your factory 6.5 diesel tachometer work with any engine using a Chevy/GMC alternator. This set up should work for all 4.8 5.3 6.0 6.2 ls, Cummins 12 valve, Detroit 6v53 6v71, big block 454, 383, and 350 small block swaps. Should work on all obs gmt400 trucks, just be sure to verify correct pin at cluster.
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