OTC 7645 Parasitic Battery Draw Test Switch Shop By Category > Cooling System>Radiator Filler 2013 (Ram Truck 1500 )

2013 (Ram Truck 1500 ) - Systems (9 - Engine

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OTC 7645 Parasitic Battery Draw Test Switch Shop By Category > Cooling System>Radiator Filler 2013 (Ram Truck 1500 )OTC Tools OTC 7645 Parasitic Battery Draw Test Switch. Finding electrical problems that drain the battery is getting harder all the time. Using the draw test switch w your digital amp meter takes the guesswork out of a complicated job. Attach the test switch between the negative battery cable & the battery, & then road test the vehicle. Next, connect an amp meter to the switch to determine the parasitic amperage draw, & locate the excessive electrical