I just recently got my lightning back on the road after a long time off and it has some issues. The main one is a speedometer problem. It’s fine up to about 60, but any higher than that and it just swings back and forth sporadically. I replaced the speed sensor on the rear diff and it made it better, but it still does it. Another problem is my drivers side running light not being on with the rest of my lights. It blinks when the turn signal is on, but is off if I’m not turning. Thank you for solutions.