Tail Light Wiring Issues

**AFBronco235** · 02-17-2013, 11:49 AM

Okay, here is the situation. My right turn signal won't blink, but my left one does, so I don't think its the blinker module. Also, my hazard lights won't flash. They just come on and stay on. I did have to rip out some wiring that the PO had installed. Or I should say, tried to install. The idiot tried connecting one of the wires to the air shocks air line! Anyways, he also decided to cut and strip the wires in a way that I can't even begin to describe. So I had to rewire the lights. I'm fairly certain that I got it all put back together.

I'm gonna head outside and look it over again in a few hours to double check, but I'd like ot hear your input on this. If nothing was flashing, I'd just replace the blinker module, but since the left is blinking, I'm not sure what is wrong.

novimustang · 02-17-2013, 12:38 PM

I'm having a somewhat similar issue, where sometimes my pass side brake light doesn't come on, and sometimes that signal doesn't work (turn or hazard). I did some searching, and apparently strange things can happen when the turn signal switch is going out. I tried kinda wiggling the turn signal stick, and sure enough, brake and turn came on. I'll replace it eventually, but they aren't as cheap as you'd think.

Steve83 · 02-17-2013, 01:50 PM

Start by swapping both flashers - turn & hazard. They're cheap, and they commonly fail, so it's almost like an oil change, but cheaper. If it doesn't help, put the originals back & keep the new ones as spares for later.

Then start going thru the grounds. Yours are similar to these:

When you're SURE they're all clean & tight, and the bulbs are AAAAALLLLL working (remember the brake/turn/parks use 2 filaments in 1 bulb), test the turn/hazard switch.

**AFBronco235** · 02-17-2013, 05:35 PM

Turns out, it was the flasher. The case was cracked, so I replaced it. All seems to be working fine now.

**AFBronco235** · 02-18-2013, 09:26 PM

Well, looks like I'll be tearing apart the steering column after all. The same problem happened again today. I'm gonna check the contacts in the column and hopefully, its something I can fix.

02-17-2013, 11:49 AM	#1
AFBronco235 Fullsize Member Join Date: Dec 2012 Location: Oklahoma Posts: 229 iTrader: (0) Bronco Info: 91 Bronco w/ 5.0 L V8, Auto w/ E40D	Tail Light Wiring Issues Okay, here is the situation. My right turn signal won't blink, but my left one does, so I don't think its the blinker module. Also, my hazard lights won't flash. They just come on and stay on. I did have to rip out some wiring that the PO had installed. Or I should say, tried to install. The idiot tried connecting one of the wires to the air shocks air line! Anyways, he also decided to cut and strip the wires in a way that I can't even begin to describe. So I had to rewire the lights. I'm fairly certain that I got it all put back together. I'm gonna head outside and look it over again in a few hours to double check, but I'd like ot hear your input on this. If nothing was flashing, I'd just replace the blinker module, but since the left is blinking, I'm not sure what is wrong. __________________ 1991 Bronco w/ 5.0L V8, Auto w/ E40D trans, factory spare tire rack, Prev. Owner added: trans temp guage (NF),

02-17-2013, 12:38 PM	#2
novimustang Registered User Join Date: Oct 2012 Location: Indianapolis Posts: 35 iTrader: (0) Bronco Info: '91 Silver Anniversary 5.0	I'm having a somewhat similar issue, where sometimes my pass side brake light doesn't come on, and sometimes that signal doesn't work (turn or hazard). I did some searching, and apparently strange things can happen when the turn signal switch is going out. I tried kinda wiggling the turn signal stick, and sure enough, brake and turn came on. I'll replace it eventually, but they aren't as cheap as you'd think. __________________ -Nathan Wright \| Sales Consultant - Bill Estes Ford, Brownsburg, IN \| 1991 Silver Anniversary 5.0 \| GT40P Heads \| Ford Racing M-9430-T50 Headers \| Mildy Ported Stock Lower Intake \| Bosch EV6 Injectors \| PCV Oil Separator \| Smog removed \| Jeg's 2½" Y-Pipe \| Skyjacker Nitro8000 Shocks, Hydro7000 Stabilizer \| Warn Premium Manual Hubs \| E4OD w/B&M 70264 SuperCooler and Filter \|

02-17-2013, 01:50 PM	#3
Steve83 Registered User Join Date: Jul 2003 Location: Memphis, TN Posts: 32,178 iTrader: (98) Bronco Info: '83 VIN & title on '93 frame/body w/'95 4.9L & EB paint	Start by swapping both flashers - turn & hazard. They're cheap, and they commonly fail, so it's almost like an oil change, but cheaper. If it doesn't help, put the originals back & keep the new ones as spares for later. Then start going thru the grounds. Yours are similar to these: When you're SURE they're all clean & tight, and the bulbs are AAAAALLLLL working (remember the brake/turn/parks use 2 filaments in 1 bulb), test the turn/hazard switch. __________________ Walk softly & carry a BIG SIX ! ! ! . .

02-17-2013, 05:35 PM	#4
AFBronco235 Fullsize Member Join Date: Dec 2012 Location: Oklahoma Posts: 229 iTrader: (0) Bronco Info: 91 Bronco w/ 5.0 L V8, Auto w/ E40D	Turns out, it was the flasher. The case was cracked, so I replaced it. All seems to be working fine now. __________________ 1991 Bronco w/ 5.0L V8, Auto w/ E40D trans, factory spare tire rack, Prev. Owner added: trans temp guage (NF),

02-18-2013, 09:26 PM	#5
AFBronco235 Fullsize Member Join Date: Dec 2012 Location: Oklahoma Posts: 229 iTrader: (0) Bronco Info: 91 Bronco w/ 5.0 L V8, Auto w/ E40D	Well, looks like I'll be tearing apart the steering column after all. The same problem happened again today. I'm gonna check the contacts in the column and hopefully, its something I can fix. __________________ 1991 Bronco w/ 5.0L V8, Auto w/ E40D trans, factory spare tire rack, Prev. Owner added: trans temp guage (NF),

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