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  #1  
Old 08-06-2019, 01:50 PM
Rick_M Rick_M is offline
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Join Date: Aug 2019
Posts: 5
Default No brake lights.

2004 Ford Ranger 2.3L Single Cab....WITH A CAP ON BACK.
No brake tail lights.
No 3rd brake light.
No voltage going to 3rd light wire running under bed to cap on back of truck.

All bulbs good.
All fuses test good.
New brake pedal switch.
Multi-function Switch is good.

All running lights, turn signals, flashers, etc work fine. Giggling turn signal lever shows nothing out of the ordinary.

There was a broken wire where cap was wired in to left tail light but that doesn't affect the brake lights on the truck or the lack of voltage to the 3rd tail light.

Took out drivers seat and going to check further into brake pedal switch currents and wires running in and out of it. It is almost impossible to work under dash without removing seat. I also have a clutch in the way. The seat belt bolt is a Torx T50 on my truck. Yours may be different and possibly a Torx T55 or a 17mm hex bolt.

*No power was coming into the brake switch from the fuse box.* It is a 20 Amp fuse and labeled High Mount Brake Light and is in #19 position in my owners manual fuse table graphic. The Lt. Green and Red wire on the harness is always hot and feeds the brake pedal switch from the fuse box. When you push on the brake the switches inside connect to each other and that connects the Lt. Green / Red wire with the Lt. Green wire. The Lt. Green wire goes to the High Mount Brake Light. With this knowledge I knew it had to be the fuse. I wrapped a strip of aluminum foil around just 1 leg of the fuse which was loose and that sent power to the brake pedal switch. I will fix it permanently soon. Problem solved for now but will keep testing for a while and see.
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2004 Ford Ranger 2.3L 112"WB LX Single Cab 5 Speed
Original owner 125,000 mi.

Last edited by Rick_M; 08-30-2019 at 12:10 PM.
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  #2  
Old 08-10-2019, 03:21 PM
ranger808 ranger808 is offline
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Default Re: No brake lights.

4 way hazard switch??? Not sure of this, just shooting in the wind.
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  #3  
Old 08-25-2019, 10:53 AM
ShawnNIZ ShawnNIZ is offline
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Posts: 12
Default No brake lights

Mt brake lights went out last year on mine. It was the disconnect plug at the brake lights in the back shorting out.

I cut the plug out and spliced the wires with connectors and silicone sealant.
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  #4  
Old 08-27-2019, 06:25 PM
turismolover22 turismolover22 is offline
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Default Re: No brake lights.

The large body harness bulkead under the truck below the drivers seat is a common culprit of corrosion. You may do well to pull that open, spray some QD-Electric cleaner in both sides, then a generous smatthering ofDielectric Grease.
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