After install, battery would drain totally overnight. Amp and sub disconnected with no change. Removed fuse under hood for audio/instrumentation cluster and problem fixed. Returned to installer and I was fortunate that the HU was only on for around 20 minutes, as they discovered that the unit was so hot that it had started to melt wiring and they had to wear gloves to remove it. Old unit was re-installed and no more problems with battery drain. I took my chances buying unit on line and looks like I'm out a few bucks. Just curious, if anyone has experienced the same problems and is there a possible fix? The heat this HU was putting out could have caused alot of damage. Your response is appreciated. Thank you
I have the same problem with My HU of over heating especially during the hot days of summer. I am gonna try to install a pc fan(square one's)underneath the HU to cool it doqn a bit. Im also gonna run a power wire to the radio power wire so the fan turns on when i turn on the radio on. I want to see if the HU is still overheating. My HU overheats even when just sitting in the car.
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Only fuse you need is the power wire leading to your aftermarket amplifier for te subwoofer. Which most likely you have too small of a gauge of wire and burned straight through it, and if you haven't, add a 40 amp fuse near the battery where your power cable is hooked up to. Also use a multimeter to test your power wire on amp, check the
there should be an inline fuse that is on the back of the radio. i know I would hate to do this too but I would take the radio out check the fuse on the back of the radio along with the inline fuse in the cables. Also you need to check your connections mainly your power cables. Make sure that they are not touching ground and make sure that all of your wires are reinforced with electrical tape. Please Rate This As A FIXYA if this helps.
250 mA drain isn't enough to be a short circuit...it most likely is the capacitors continuously charging.
One way to confirm this is to put an ammeter (with a fuse inline) in series with your main power feed to your stereo power supply. By adding or disconnecting individual components, you can quickly determine where your power drain is coming from.
check to see if you have power going to the amp. Battery(+) and Negatve(ground). if those are ok, turn the radio on and check to see if the remote wire(it's usually blue) has power. if you have power on the battery wire and the remote wire from the radio, then there is a problem with your amp. check fuses on the amp if any.
When I hook up an amp I put the power wire to the battery,the ground to a suitable chasis ground,and the remote wire I hook up to a switched 12 volt in the fuse block.It's usually marked ign on the fuse block. If you have a test light you can see which one is hot when you turn the key on.As far as the radio not coming on there should be a fuse in line on the red wire and dont forget the one under dash also.Some radios have a reset button on them somewhere you might see if yours does.