Thanks so far for the info.
I am still trying to understand,
I see two options to wire these systems —
1st option is to connect the yellow wires from my two hds8 to each with the LSS-1 yellow wire and run these to a switch and then to 12v pos.
Second option is to connect the yellow wires from the HDS8 to each other and hook up a seperate yellow wire from the LSS1 to a switch and then to 12v pos ?
Thanks for being patient I dont want to wreck anything at these prices.