Can you connect car stereo directly to battery?
Can you connect a car stereo directly to a battery? – Quora. Yes. Although it will drain the battery over time. If just for testing purposes, on aftermarket radio, hook the yellow and red wire to positive on battery, black to ground.
Will a bad ground kill your battery?
Your vehicle’s charging system depends on having a good ground. If the ground wire is bad, then the battery cannot be charged. Of course, another reason for a dead battery could be issues with your alternator or the wire that connects from the alternator to the battery.
Can a bad ground cause rough idle?
just to add, idle issues can be caused by poor grounds. if throws an offset to the voltage seen by the ECU, which either adds or pulls fuel. This either runs the engine lean or rich and the idle gets screwed up.
What is an acceptable parasitic draw?
A normal amount of parasitic draw for newer cars is between 50-milliamp to 85-milliamp current draw. A normal amount of parasitic draw for older cars is a reading less than 50-milliamp. Anything past these amounts indicates an electrical issue and should be addressed by a mechanic.
How many amps is considered a parasitic draw?
In order to check for parasitic draw, a Digital Multi-Meter (DMM) that can handle a minimum of one milliamp and up to 10 amps is needed to perform a parasitic draw test.
What is the maximum parasitic drain allowed?
Although the maximum rule of thumb recommended parasitic drain is around 30 mA (0.030 amps) a typical drain usually falls into the 7-12 mA range, even though some luxury vehicles do approach the maximum. Multiply the drain (in amps) by the time (in hours) the battery sits without being recharged.
How long will a battery last with a parasitic draw?
If you have an 85-milliamp draw in a car with just a single 50Ah battery, as is the case in most vehicles that aren’t diesel trucks, your battery will be completely discharged from a full state of charge in just over three weeks.