Pioeer 4 Channel Amp Intallation Help needed

[rpps]

I just installed a Pioneer 4 channel amp to my Golf 90TSI, I tapped into the speaker wire down under the trim of the door sills I didn't use RCA's. With a lot of mucking around I got battery power but to find an accessory feed for the amps remote on was and still is a challenge. I ended up using a piggy back fuse and used the Infotainment fuse on the fuse box I would like to know if there is a better option . The Amp makes a huge difference to the sound of the factory head unit but I have one problem. When I turn off the ignition and get out of the car then shut the door after a few seconds I hear a pretty loud thump through the speakers, the same thing happens when I first unlock and open the door, after a few seconds I hear a thump through the speakers even though the keys aren't in the ignition. I'm at lost at what's causing this thump through the speakers if I can't solve it I will have to remove the Amp. Any help appreciated.

[DV52]

I just installed a Pioneer 4 channel amp to my Golf 90TSI, I tapped into the speaker wire down under the trim of the door sills I didn't use RCA's. With a lot of mucking around I got battery power but to find an accessory feed for the amps remote on was and still is a challenge. I ended up using a piggy back fuse and used the Infotainment fuse on the fuse box I would like to know if there is a better option . The Amp makes a huge difference to the sound of the factory head unit but I have one problem. When I turn off the ignition and get out of the car then shut the door after a few seconds I hear a pretty loud thump through the speakers, the same thing happens when I first unlock and open the door, after a few seconds I hear a thump through the speakers even though the keys aren't in the ignition. I'm at lost at what's causing this thump through the speakers if I can't solve it I will have to remove the Amp. Any help appreciated.

rpps: I'm not entirely sure that I understand how you got power for the amp, but it sounds like you have a residual power problem somewhere. For starters, I suggest that you have a read of this link HERE . Chid (a fellow forum member on mk7.com) and I have been discussing some similar issues with the replacement of a fender amp project. In Chid's case, he already had VW's Digital Sound System so his project was a little different to yours, but our discussion about a power feed to the new amp might be useful.

You might want to pay particular attention to post #35 in the link. I've suggested a simple relay circuit for power-up/power-down for the amp which might work in your case, but I cautiously suggest this because I don't understand how you got your amp's power.