Opisrelay upgrade set for Miata mk1 NA windows- window switch will not burn anymore- windows will move significantly faster (guide cleaning and lubricating after 25 years is still necessary)Done according to: https://forum.miata.net/vb/showthread.php?t=618095Install is to cut 4 wires from stock switch, then soldering 8 wires.Powered directly from car battery, with additional fuse



