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Re: Hour Meter
The point of wiring it like he says is if the "ign" is on, the Hobbs meter won't be counting hours if the engine is not actually running. The oil pressure ground activates the meter. Otherwise sitting with the key on could cause the meter to run.
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44 Willys MB
52 M38A1
64 Corvette Coupe
68 Camaro 'vert LT1 & TH700
69 Z/28 355 12.6's @110
69 Chevy Short Step 4 1/2"/7" drop
72 Jimmy 4WD 4spd 4" & 35's
02 GMC 2500HD 4x4 Duramax
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