turn signals stopped working; more info still not workin

[bluebronco69]

so the other day the turn signals just stopped working... and the hazards too but the brake lights still work fine, im pretty sure the signals are on the same fuse as the brake lights right? i tried a new flasher unit, (well it was from the garage maybe it was bad?) anyways i tried it in both flasher unit plugs, and nothing happened, so im stuck now.

ideas?

 

[GrillMaster]

would first try two new flashers (think the hazzards have one as well) and check all fuses and bulbs. Sometimes when one bulb goes out they they both wont work. Like those old christmas lights.

Iam having a different problem with a short in my blinker/brake light system right now. It's driving me up the wall!

 

[Mark]

Turn signals and hazards are on separate circuits - turn signal and backups are on the same.
Do your running lights work?

 

[bluebronco69]

yes running lights work fine, and my back ups are wired through my own ideas with a switch on the dash. so maybe the fuse did blow, i think i bypassed it or some thing for the back ups, anyways i dunno, i will check that

and the hazards arent working either of course i always had to turn one of the turn signals on and then pull the hazard knob to make the hazards come on, but i have tried to figure out that problem before to no avail.


also bulbs are working fine, since my brake lights are working fine too
just signals are dead

 

[JC]

I was having some random problems with my taillights and figured I had a short somewhere. Blinkers would stop working usually, and sometimes the brake lights too. The last time it happened, while I was trying to figure it out, I unplugged the emergency flasher switch and viola, my blinkers and brake lights started working. I haven't had any problems since, so it looks like it was a bad switch. Good luck.

 

[Viperwolf1]

so the other day the turn signals just stopped working... and the hazards too but the brake lights still work fine, im pretty sure the signals are on the same fuse as the brake lights right? i tried a new flasher unit, (well it was from the garage maybe it was bad?) anyways i tried it in both flasher unit plugs, and nothing happened, so im stuck now.

ideas?

Brakes, hazards and turn signals are each on their own circuit. There is a fuse for the hazards and a different fuse for the turn signals. The brakes use the auto circuit breaker in the headlight switch. Pull the flashers and check for power at one of the wires in each connector. If you don't have power look at the fuses. If you do have power look at the flasher units, hazard switch, or turn signal switch for the problem.

 

[Viperwolf1]

and the hazards arent working either of course i always had to turn one of the turn signals on and then pull the hazard knob to make the hazards come on, but i have tried to figure out that problem before to no avail.

That's a sign that the haz flasher of haz power is not working. By turning on the turn signal you are operating the hazards off the turn signal flasher.

 

[bluebronco69]

yea i had tried switching hazard flasher switches for the other problem i mentioned (have to use a turn signal to make hazards work) but nothing worked, so maybe i had a bad flasher unit for the hazard side too, ok well i will try unplugging them and then checking for power, and hopefully just buying new hazard flasher units, to plug in a fix it
thanks guys ill let you know when i find out

 

[bluebronco69]

ok chew on this

i checked for power at both flasher units and have 10.5-11 volts in one terminal of each, so i put in new flasher units and nothing changed...
ideas now?
bad turn signal switch? i hope not i have replaced that thing twice with aftermarket ones, they all fail in short order...

other ideas?
again the brake lights and tail lights are working just great
no turn signals, no hazards.

thanks

 

[Viperwolf1]

ok chew on this

i checked for power at both flasher units and have 10.5-11 volts in one terminal of each, so i put in new flasher units and nothing changed...
ideas now?

Follow the wires from the flashers to the column connector and hazard switch. Turn signal power wire is blue, hazard wire is white-red. It might be easier to pull the flasher switch out to measure voltage there. It sounds like you have 2 separate problems going on because the hazard and turn signal wiring is isolated from each other on a '69.

 

[bluebronco69]

so with either signal on (right or left) i shoudl only have power going to one of the little round flasher units, and with hazards on i should have power to the other right...
just making sure i got this straight


i have always had problems with haz and turn signals
but nothing like this one where they just die
when it first died it worked again the next day, now they wont com eback to life
ill keep checking wired

 

[Viperwolf1]

Yep you got it.

 

[oleguy74]

turn sig

here you go.turn sig fuse is f2 14 amp.emg flasher has power all the time.turn only when key is on.

 

[bluebronco69]

ok another new bit of info that may help solve the problem, if i am pushing the brakes and put on the turn signal say the right hand signal then the right brake light will go out, and same goes for the left side if i use the left turn signal...
so this means it is probably the wiring in the column through the signal switch right? since the stop light wires go through there too?

 

[Viperwolf1]

Doesn't help as much as you'd like. The turn signal switch is supposed to do that. It disconnects the brake switch current and should apply the turn signal current according to the turn switch position. The problem is still somewhere between the TS flasher and the TS switch.

The hazard switch on a '69 has the front lights wired direct. They don't go through the turn signal switch. Should make troubleshooting that circuit easy.

 

[luke1970]

this might sound elementary but I cleaned all my contacts and used di electric grease and it cured my problems and I was having fits with mine. just my 2 cents

 

[bluebronco69]

ok thanks for the extra info, im going to go through all the grounds today and make sure they are nice, and then ill go and see if the haz. switch is bad, i have a known good one in the shop.
and ill test other things.

 

[bluebronco69]

ok, tried more things, first i verified both the fuse for the signals and the hazard are in fact good
also the front turn signals have good bulbs, i was hoping one burned out and the filiment had come to rest on the other causing a short, but no luck

also tried another known good hazard switch, and it didnt cause anything different to happen


i also noted that when i put on a turn signal, say right, with the brakes pushed, it will make the right light go out, this is also with the key off
same goes for the left side.
i thought it was interesting that this happens with the key on and off...


i still need to probe some wires but i am leaning on the stupid turn signal switch in the steering column

 

[Jordanlu]

I am having the exact same problem in my '69. I'm interested to see how this plays out.

PO wired a CD changer and an auxiliary heater into the same circuit as the signals on my rig. I'm constantly blowing the 14A fuse - is it safe to drop a 20A into the same space? Also - quirky - but stereo head unit loses power when emergency flashers are turned on. I've replaced both flasher units, but have yet to isolate the problem. I'm assuming my circuit is overloaded, but haven't had the chance to tear apart all the wiring and reroute the aux heater and head unit.

 

[Viperwolf1]

I am having the exact same problem in my '69. I'm interested to see how this plays out.

PO wired a CD changer and an auxiliary heater into the same circuit as the signals on my rig. I'm constantly blowing the 14A fuse - is it safe to drop a 20A into the same space? Also - quirky - but stereo head unit loses power when emergency flashers are turned on. I've replaced both flasher units, but have yet to isolate the problem. I'm assuming my circuit is overloaded, but haven't had the chance to tear apart all the wiring and reroute the aux heater and head unit.

No, but it's safe to run completely separate power wires from the battery or soleniod for your sound system and heater. Just make sure they're fused.