Hey guys, I got my girlfriend a subwoofer setup for chirstmas and I got it installed today but was met with issues. The amp is capable of taking high level inputs into the RCA and is also able to switch on when the radio is when configured this way so no need for a remote wire. Anyway I got everything in, RCAs tied to the rear speakers (In correct polarity), and everything played fine. Sounded good, but when I closed the trunk the sub immediately started playing a very loud tone. I checked both the ground to body at battery and ground to sub in trunk, both are bare metal. I have no idea what's causing it, granted I'm new. So recap, RCA is taking in high level input from rear speakers, and everything works fine so long as the trunk is open. Grounds are both bare metal.
I also put my own battery in the trunk, disconnected the amp from the car power and used the other battery for power, same thing.
I also disconnected the RCAs and connected an RCA to 3.5mm jack to my phone and amp, sub played fine even when using the car power and trunk closed.
That tells me it's the high level input setup (I think) but I don't know why. I even took alligator clips onto each lead of the rear right speaker and put them onto a stripped RCA connector. Put this RCA into a splitter and then that into amp. I then used a jumper from 12v to remote to turn on the amp. Same thing happened but with trunk open and radio off. (In all instances engine was off).
The bolt being used in trunk is a factory grounding bolt for the taillights. I brought it to bare metal under the bolt. Same thing I did in my friends corrolla which worked fine.
Probably (99.9%) my fault, but I'm having a hard time and I cant find help elsewhere.
I also put my own battery in the trunk, disconnected the amp from the car power and used the other battery for power, same thing.
I also disconnected the RCAs and connected an RCA to 3.5mm jack to my phone and amp, sub played fine even when using the car power and trunk closed.
That tells me it's the high level input setup (I think) but I don't know why. I even took alligator clips onto each lead of the rear right speaker and put them onto a stripped RCA connector. Put this RCA into a splitter and then that into amp. I then used a jumper from 12v to remote to turn on the amp. Same thing happened but with trunk open and radio off. (In all instances engine was off).
The bolt being used in trunk is a factory grounding bolt for the taillights. I brought it to bare metal under the bolt. Same thing I did in my friends corrolla which worked fine.
Probably (99.9%) my fault, but I'm having a hard time and I cant find help elsewhere.
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