I got an alt from tenney through mylows, to a while for to install it. When I did, it was DOA. Made contact with mylows, who then made contact with Mike Singer. The end result was a truly custom h/o alt. Mylows customer service is above board. I got a dc 12 from him, when I installed it, without realizing it, I hit the slave/master on the amp moving it to slave. Needless to say, there was no output. Called mylows, after asking a couple of questions, and showing how to verify sub not DOA, he said, "Move the slave/master switch from slave to master." And plus he is just a great dude. Has never steered me wrong, and pretty sure that I am not the only one he's helped.