Exterior lighting question
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Freshman User
Joined: Feb 2017
Posts: 41
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From: Durham, NC
Exterior lighting question
OK, I think I know the answer is yes, replace the turn signal switch. The problem is. I was told the other day that my brake lights were not working, on both sides. It must be a fairly new issue, as no one had mentioned it before. So, when I got home I started doing some checking. My taillights worked fine, but neither the front or the rear blinkers would work, which is odd as I have checked them before and all of them were working. So, I had a friend verify for me that for a fact my brake lights, blinkers, and reverse lights were all not functioning. I know that the brake lights are also dependent on the switch attached to the brake arm, however with all the other lights malfunctioning, I figured that probably isn't the issue. Well, while I was driving home from work yesterday, I randomly noticed that the hazzard light switch was in the "On" position. So, I turned it off and lo and behold, my blinkers are all now functioning. I haven't had the chance to have someone verify my brake lights and reverse lights yet, but hopefully they are now working too. However, it still seems there is something malfunctioning within the turn signal switch itself. Thoughts? Opinions?
Fleet Mechanic
Joined: Sep 2014
Posts: 1,626
Likes: 78
From: NE Texas
First, you have two flashers, one for turn signals and one for emergency flashers. If your emergency flasher died, it would not be shocking to find it was blocking current to everything on that circuit - like turn signals and brake lights. Second, grounds... you have grounding points at all four corners of the truck. A bad ground at the front of the truck can impact the turn signal or brake light at the rear. Best as a general rule to spend an hour, polish all those grounds, and check continuity from the ground inside the socket to the grounding point - it may look good but not work well.
Thread Starter
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Freshman User
Joined: Feb 2017
Posts: 41
Likes: 0
From: Durham, NC
First, you have two flashers, one for turn signals and one for emergency flashers. If your emergency flasher died, it would not be shocking to find it was blocking current to everything on that circuit - like turn signals and brake lights. Second, grounds... you have grounding points at all four corners of the truck. A bad ground at the front of the truck can impact the turn signal or brake light at the rear. Best as a general rule to spend an hour, polish all those grounds, and check continuity from the ground inside the socket to the grounding point - it may look good but not work well.
Fleet Mechanic
Joined: Sep 2014
Posts: 1,626
Likes: 78
From: NE Texas
Back into a parking space in front of a big plate glass window at a strip mall. Back up near a wall at night. Stop on a dark street about 50 feet past a stop sign and watch the sign as you run through the various lights. Wedge a piece of wood between your seat and the brake pedal. Wait till a truck with lots of chome pulls up behind you at the light and drive him crazy switching lights and signals. Have fun.
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