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Free minder
Join Date: Nov 2001
Location: Middlessex county, MA
Posts: 9,422
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When you measure the voltage to the regulator not hooked to the circuit, there is very little current flowing, so no ohmic drop. When you connect the circuit, you cause more current to flow, so bigger ohmic drop.
Aurel
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1978 SC Targa, DC15 cams, 9.3:1 cr, backdated heat, sport exhaust https://1978sctarga.car.blog/
2014 Cayenne platinum edition
2008 Benz C300 (wife’s)
2010 Honda Civic LX (daughter’s)
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