Often, the right brake light on our 86 in sig below does not come on with the left brake light. Not sure when this problem started, as we only see it if somebody in the family is following that truck.
But after actuating the blinkers, it fixes itself. For a while.
I reason that the fault must be in the blinker switch on the stalk. We recently installed a new plastic detent spring from fleabay to correct the blinker not staying on unless held on. Anybody BTDT?
Reno in Central Texas, 86 F250 XLT Lariat eclb 2wd 6.9, plus 2 Bricknoses, 1 Aeronose that's getting a Bullnose front clip, and parts trucks. Busy lads, father and sons wrenchers.