2001 Acura CL 6 cyl Front Wheel Drive Automatic 200k+ miles
my cl is charging at 13.8-14.2v but over night the battery is draining. One head light out but all wires check out on groung fault testing. What could this be. I suspect it is the stock bose amp but dont know where it is to check. Any one got a clue?
There is a procedure for finding a battery draw like that.
You will need a digital ammeter and a jumper wire with clips on the ends to do this.
First rig any door switches so you can have a door open without triggering the interior lights and unplug the hood light. Remove one battery cable and attach the meter in series between the battery cable and battery post. Take the jumper wire and also attach it the same way. Leave the jumper wire on for at least 10 minutes to expire all the automatic timers. Now remove the jumper wire and read the meter. Anything over 50ma is too much draw. The way you locate this is to start removing fuses one at a time until the meter drops to normal level. This will be the circuit with something staying on. Determine what components are part of that circuit and check them individually until the problem is isolated.