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battery drain

1K views 8 replies 4 participants last post by  Grubrunner 
#1 ·
When I leave my aftermarket stereo on and turn truck off it drains battery overnight.But doesn't if I turn it off before I turn truck off it doen"t drain.Any ideas?
 
#2 · (Edited)
Is the memory wiring attached to the head unit?

Is this a recently installed head unit?

Does it have an amplifier?

Was the original system an infinity system?

Is the power wire hooked to a fused circuit (key on/acc on only) <- if it's wired into the factory accessory wire for the radio there shouldn't be any power going to it.

Also if you hooked the memory wire and or the power (probably red/yellow or Red/orange depending on the manufacturer.) wire together and put them to a constant power source that's a bad thing.

Can you still listen to the radio when the key is off? Also a bad thing.
 
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