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1995 Chevy Cheyenne OBS LS swap TCC Brake switch and Tach wiring - YouTube
Obs Ls Swap Wiring - Wiring Diagram Pictures
Stock Tach Working on LS Swap - YouTube
LS Swap Tachometer Install (SunPro 8k Tach to 5.3) - YouTube
1996-2000 OBS / GMT400 Gen3 LS Swap Info
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Sunpro Tach Wiring Diagram - Wiring Diagram