The only reason I give it 2 stars is because it works. I received it expecting to open the box and install it. Come and find out it doesn't come with the backup taps you need to make it this way! After 3 auto parts shops I found the fuse taps and installed them relatively easily. It's also fair to add that the wires had to be cut off and replaced with some of the wire connectors I had as the quality was very poor. All in all, once the issues are resolved, the product works as advertised and delivers the right amount of performance that I require.