I couldnt find anything on Mavericks...I did find a wiring diagram for a 1968 Torino...not sure if it uses the same principles, but it should give you an idea on any electrical components/grounds that could be doing it...maybe someone can verify if they use the same setup or not... https://www.fordmuscle.com/forums/a...-70-ford-wiring-diagram-0900823d801038f91.jpg Sorry if this doesnt help
JD One side works but not the other side??????? Due both side marker lite work????? Left turn/stop light color code is green/black strip Left tail light is brown Right turn/stop light color code is red/black strip Right tail light is brown So take your test lite and test the brown wire to see if you have power at the both sockets if so BAD GROUND ... If not broken wire in wiring cross over form left to right OR a bad wire splice joint ... Jay
That there tells me it is definitely a bad ground, or there is a break in the wire going up to the socket somewhere.