The yellow wire the LSS is your wake up wire and it needs to be wired to switch or to the yellow wire on HDS unit or it will not power up. Tape off the blue wire. You may need to use cord that came with your unit so you will have yellow wire. Also its best if you run wires straight to battery and not thru your console and use the fuse connection that came with it. These units are very sensitive and any type of corrosion could create a voltage drop. There is no on and off switch for LSS, thats what the yellow wire is for.