Installed a new GM turn signal switch I picked up at Napa. Installed new custom rear lights which have common signal & brake bulbs. Can't get system to work. Looking in my Painless wiring manual they say I must have the " integrated " type turn signal switch for this setup - my question is how do I know ... Napa guys just shrug -can't tell me anything unless I can give them a year/model # which of course I can't since system is all custom. Any insights would be appreciated.
Thanks
