Sorry for the delay, im at work and just sometimes I have to well .... work. Ok. On the line leveler, the wires are input to the LL. The RCA connectors are the output on the LL. White is 1 channel and grey is the other channel. Solid color is + and color/stripe is -. So you will wire the speaker wires out of the head unit to those input wires on the LL.

 

No problem Travelingypsye, I appreciate all the help you giving. I will see if I can give this a go after work today. I have one of those shitty things called a job as well.
Steve