Unveiling Automotive Mysteries Can Meter Shunts for Parasitic Draw Investigations

What I always forget is that I then go and open the car door and the interior lights turn on and depending on the car it can blow the meter fuse ... How to overlay in-cylinder waveforms - and how peak compression CAN be a false TDC ... Which Parasitic Draw Test Method is REALLY the Best? Automotive Homemade Tools Part 2: Low Amps with a Scope, Shunt Resistor: Parasitic Draw. 2.4K views 4 years ago This parasitic draw, when it occurs, is so strong, it'll zap the battery overnight and have even seen it suck down to 5-6 volts left on the battery the next ... In order to use a meter this way you must know that the draw is lower than the fuse rating and wait for it to go under that amount after ... A clamp-style multimeter can be used to calculate parasitic loads and help track down where the amps are going. Max Parker. Back from the Dead. Monitoring system needs to know when engine is running. 3. The negative side of the battery cable can act as a current shunt. So, voltage ... If I'm seeing it right you have the range set to 200mA but the current flowing through the 10A input (10A shunt). It's not going to hurt ... Problems with parasitic drain (standby current draw) keep popping up, particularly when aftermarket radios or non-genuine Gateway modules ... Shunts are fine and yes they make up to 500 amp shunts and meters, but this seems overly complicated and unneccesary just to check for parasitic ...