Thanks Darren, appreciate the help. I will think this through and see how far I take it. Right now I think its the myriad of accessory wires that are the complication - taking feeds off scotch locked connections and no cable ID is a pain. I have the know-how and method, just needed the discipline 20 yrs ago to do it right - I think there is some saying around' do it right the first time and then forget about it'.