I really like the GT Power sound system so much I installed them in 3 of my electric models. Installation is straight forward and fairly simple. The instructions take a little time to understand. Kinda obvious it is an English translation from maybe Chinese or other Asian language. Use a good gle to attach the speakers. I used thick CA the first time and the speaker came loose. I then used 5 min epoxy and they held just fine. The only negative for me is that it has deans type connectors to connect to ECU and most electrics use the yellow or blue connectors. I ended up soldering the sound Power line directly to the ECU cable and it worked great.