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You are supposed to have continuity through certain parts of the bridge rec.
The easiest way to test a bridge rectifier is close the contacts check for AC voltage going in (makes sure the switch is good) and check for DC volts on the output side. If the motor has DC potential and not turning then the brushes or motor are bad.
I use a 30 amp dedicated welder circuit and 14 gauge extension cord.
I don't use a gfi.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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