Wilf if you have the time you could trace the wires from each switch to where they end. First as mentioned turn them on one @ a time. Also I have a gang block on mine just now but they are not hooked up to anything @ this moment in a couple of days I won't beable to say that. The PO may have installed the block but didn't get around to adding extra accessories. Good luck my friend. Angela:waving:I have one of those 4 rocker switch covers on my clutch master cycliner. No clue what the switches do No mention if it the ownners manual so I assume its an aftermarket acessory.What would they be switching.