I bought for the installation of a subwoofer Axton AB20A this installation kit and must say that I am satisfied on the whole. It's all included what you need for installation and even in (for most vehicles) sufficient length. The processing of the cables, especially from the 40A fuse make a good impression. Is the only negative (hence only 4 stars), that the remote lead (blue wire in the picture) is a single cable. I know that so that this cable with the stereo RCA cable is off and it is so much easier to install. Therefore, I have the cable from my old car used where the remote management was involved. But otherwise really great and absolutely okay for the price :-)
