there could be sevaral things to check 1 fuse for those lights 2 bulbs and sockets 3 on the side of the transmission there should be an electrical plug. that plugs into your reverse indicator switch. so when you put the car in rev. it sends elec. to the lights. you might need that switch. 4 last check to see if you shifter is in the correct place when the lights should be on sometimes if you wiggle the shift or move it off the ( r) it will send the signal to the rev. lights
could be bubs, ground wire but a great place for answers and help on El Caminos is www.elcaminocentral.com
check the altinator
starter
I had a 1986 cj that had the same problem. Couldn't find the problem until the dimmer switch on the floorboard went out. Replaced the switch and the gauge lights started to work.
first check fuses,then bulbs,then reverse switch on trans mission,it might need replacing,its screw into your transmission.
Starman - 1986 Blue Lights 1-4 was released on: USA: 17 October 1986
All Things Are Lights was created in 1986.
I DONT KNOW IF THIS WILL HELP BUT YOU MIGHT TRY THIS . I HAD A SIMILAR PROBLEM WITH MY 93 DODGE DYNASTY.THE LIGHTS WOULD GO ON AND OFF INTERMITTENTLY. SOMETIMES I COULD ONLY GET THEM TO STAY ON BY HOLDING THE HIGH BEAM LEVER. I REPLACED THE HEADLIGHT DASH SWITCH. IT SOLVED THE PROBLEM.
2/28/1986.
The cast of Black Lights White Shadows - 1986 includes: Anne Pitoniak
Bad synchronizer? Bent shift fork?
in 1986 christmas lights were invented