Fail Install v2 (sub going haywire)

[Mr.SoloDolo 10+ year member]

if you are hearing a door close you have a ground loop issue....you say that the issue is not the amp ground what have you done to check the ground...the real method of testing a ground is to test the resistance between your ground and the battery ground while the system is under load or by measuring voltage at the amplifier and the battery while the system is under load. If the voltage is not the same you have a ground issue. You could also disconnect the rcas and see if the problem persists if it does you have a ground issue. If it does not persist you either have a bad loc or you need to grab your signal preamp instead of from the output side of the amplifier.

I've ran a 17ft run of 4awg directly from the amp to the battery and it still had the same issue. I'm not quite sure how to check resistance like you described but if all else fails i'll attempt that.

With the RCA's out nothing at all responses

 

[SPLaudio 5,000+ posts]

sorry what i ment was the headunit needs to turn off before the amp dose or there will be crazy feedback thus the ignition used as remote. the ignition never has any noise...

 

[Worlddre 5,000+ posts]

I've ran a 17ft run of 4awg directly from the amp to the battery and it still had the same issue. I'm not quite sure how to check resistance like you described but if all else fails i'll attempt that.
With the RCA's out nothing at all responses

if the problem goes away with the rcas disconnected than your problem is either the rcas, the loc, or the fact that you are getting your signal after the amplifier

 

[Wingman0121 10+ year member]

LOCs are terrible, I avoid them like a plague unless it's built-in on the amp itself.

 

[nikosbuddy 5,000+ posts]

Im having the same issue with a powerbass xa3000d install. Except it was going directly to a jensen indash.

 

[jaymann107 10+ year member]

I had the same problem in my 2001 Acura. Find the stock Bose amp and it will have a factory remote wire. If it is a CL or TL the amp is located behind the trunk liner near the jack ( looking at the jack with the plastic cover removed it will be to the left). The remote wire is yellow and white.