I could be wrong but I do believe the turn signals and brake lights all run through the multifunction lever. AKA the turn signal lever.....

 

So you're thinking that could be bad?


Sent from my iPhone using Autoguide.com App

 

I have had to replace them on chevrolets and one of our Macks. We couldn't keep things simple we had to run brake lights and hazards through the turn signal lever. ( Multi function lever ) not cheap either... good luck.

 

Multi function switch would be my guess

 

Switched out the multifunction switch and the brakes lights are working again! But still no hazard lights or turn signals, I heard of a flasher relay? And that it's under the dash somewhere behind the radio? I hear something clicking when ever I turn the hazard lights on but no lights flash any more help would be good


Sent from my iPhone using Autoguide.com App

 

I did read that there is a flasher behind the radio. I have an 05 and the trim and radio come out quite easy, not sure on a 99. good luck..

 

Hey there, I'm having a very similar problem but i have tried the flasher relay fuses and the multi function switch and still no turn signals nor hazards.

 

No Flashers, turn signals or Rear brake lights

97 F350 7.3, So I hook up my plow today and when checking the lights I realize I have no turn signals, rear brake lights and hazards. My 3 brake light does work above the bed. Just changed out the turn signal and still nothing. Could it be either my turn signal or flashers relay if so how could I test it?:dunno:

 

97 F350 7.3, So I hook up my plow today and when checking the lights I realize I have no turn signals, rear brake lights and hazards. My 3 brake light does work above the bed. Just changed out the turn signal and still nothing. Could it be either my turn signal or flashers relay if so how could I test it?:dunno:

Ok so dummy me :doh: It was the multi switch. When I checked the flasher relay on back i didn't plug it in right so corrected that and WALA it works!!!

 

changed out the multifunction switch and also the flasher relay behind the radio. sometimes ill have brake lights and sometimes i wont, and also only the left turn signal works when my brake lights work. i have all new bulbs and fuses so whats the deal? any help?

 

I'm having the same problem, was planing on replacing the turn signal switch today. Do I have to pull the steering wheel and air bag to do so?

 

No all you have to do is pull off the plastic peice surrounding the back of the steering wheel and there will be 3 or 4 hex screws holding it in, very easy to replace took me about 20mins but you can also repair them by taking your old one apart and cleaning the terminals I believe


Sent from my iPhone using AutoGuide.com App

 

Oh ok thanks for the info.

 

Let me know what happens because my lights still aren't working like they should


Sent from my iPhone using AutoGuide.com App

 

Ok we'll I replaced the multi function turn signal switch, the turn signal/ hazard lamp relay that is located in the fuse panel under steering wheel. Still no turn signals or hazard lamps... Any ideas???

 

Meant to say I replaced the 20 amp fuse for the turn signals / hazard lamps ..

 

Well got it! The relay behind the CD player was louse. Took it out, cleaned it the connections and we are good, turn signals and hazard lights work great.

 

I was about to say, I didn't think there was relays under the dash relating to the turn signals/brake lights but yes I replaced the relay behind the radio because it was clicking every time I turned my flashers on, I fixed the relay and still nothing happens idk what the deal is now


Sent from my iPhone using AutoGuide.com App

 

Maybe I have a bad ground?


Sent from my iPhone using AutoGuide.com App

 

I'm not sure man, maybe someone else will chime in with some ideas. There's a lot of wires going multiple place that could of rubbed something or shorted out but if that happened you would think it would blow the fuse.

 

you ever figure out what it was. I have no turn signals but, I have hazards, and stop lights. Only when I it is cold out does everything work properly, when it warms up the turn signals disappear, then after a long trip the hazards and brake lights disappear. I have checked all fuses, replaced the flasher relay, (twice now) totally lost on where to look next. anymore relays for flashers???

 

turn signal issues

Found the problem, turn signal harness tab broken. the harness pulls out just slightly to cause the problem. http://i1132.photobucket.com/albums/m575/blackgunsaregood/2013-11-25_12-53-53_83.jpg

 

So now after driving about 40 min one way the truck smelt like burning wires. Now I have no turn or brake anymore. This is starting to piss me off.

Sent from AutoGuide.com Free App

 

The relay under the dash keeps burning out. 20 amp factory. I was told to swap all of my trailer lights to l.e.d supposedly it will reduce 12 amps. I have 16 lights on my trailer.

Sent from AutoGuide.com Free App

 

hey all i have install a new muti function switch and all new fuses and still no brake lights or turn signals anyone?

 

I had to pull extra slack from turn signal harness. What happens is when the steering column is moved up and down it will disconnect just slightly from the switch. I had to actually zip tie the harness to the signal switch assembly. Hope that helps