OleBrownie Posted May 3, 2022 Share Posted May 3, 2022 My reverse lights and third brake light have not worked ever since I’ve had the truck, just never got around to fixing it and need to soon. I’m not sure whether it’s a fuse or bad connection; I don’t know how to check and am not very sure where to start a diagnostic. If anyone has any suggestions please let me know, thank you! Link to comment Share on other sites More sharing options...
Gary Lewis Posted May 3, 2022 Share Posted May 3, 2022 Third brake light? I'm not sure what you mean as these trucks only have two brake lights. But on the backup lights the problem is frequently either the switch in the transmission or the wiring back by the lights. So I'd start by looking to see if the wiring is connected to the switch on the transmission. Then I'd follow it on back to the lights themselves. Link to comment Share on other sites More sharing options...
OleBrownie Posted May 3, 2022 Author Share Posted May 3, 2022 Third brake light? I'm not sure what you mean as these trucks only have two brake lights. But on the backup lights the problem is frequently either the switch in the transmission or the wiring back by the lights. So I'd start by looking to see if the wiring is connected to the switch on the transmission. Then I'd follow it on back to the lights themselves. Thank you for the diagram! I think I meant the Rear Cab Light, the one outside the truck above the rear window, bulb looks brand new and I replaced it anyways but does not work. Link to comment Share on other sites More sharing options...
Gary Lewis Posted May 3, 2022 Share Posted May 3, 2022 Thank you for the diagram! I think I meant the Rear Cab Light, the one outside the truck above the rear window, bulb looks brand new and I replaced it anyways but does not work. You do know that you turn the headlight knob fully counterclockwise to get the bed light on, right? Link to comment Share on other sites More sharing options...
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