Turn signal problem

[csmadkins]

I have a 70 Bronco with a turn signal problem. Replaced a worn trailer harness several months ago due to malfunctions and now the turn signals don't work correctly. When the trailer is hooked up I turn the signal left or right and the correct tail light works properly but the opposite side also blinks but dimmer. I checked the grounds and they appear good and measured zero with a VOM. I hooked the trailer to another vehicle and all lights work great. I replaced the light switch and it is better but not cured. The hazard lights only work when u turn the turn signal left/right not just when u pull the switch out. Turn signal wiring harness was replaced several years ago. Flashers were both replaced today with heavy duty flashers. Head lights use to go out when high beam was on. Now they seem to work high or low. My Bronco is haunted!

 

[OklahomaBroncoB]

What's the hazards position?

 

[Viperwolf1]

When the trailer is hooked up I turn the signal left or right and the correct tail light works properly but the opposite side also blinks but dimmer.

Bad ground on trailer lights or at pigtail. Don't rely on the hitch to provide a good ground.

The hazard lights only work when u turn the turn signal left/right not just when u pull the switch out. Turn signal wiring harness was replaced several years ago. Flashers were both replaced today with heavy duty flashers.

No power to the hazard flasher circuit. Check fuse.

 

[csmadkins]

i replaced the hazard switch and checked voltage at plug. Have 12volts present. hazard lights still only work when turn signal is pressed left or right. When i press the brake with the hazard switch on and the turn signal in either position the flashing stops and both indicator lights stay on. Release the brake and the flashing starts again. told u my Bronco was possessed.

 

[Viperwolf1]

When i press the brake with the hazard switch on and the turn signal in either position the flashing stops and both indicator lights stay on. Release the brake and the flashing starts again. told u my Bronco was possessed.

This is normal operation with the hazards on.

I'll say it again, you don't have enough power available in the hazard circuit to drive the lights. 12v isn't power, it's voltage. You are not getting enough current. This is commonly caused by rusted fuse clips and faulty fuses.

 

[csmadkins]

Bingo. The fuse clips are indeed rusty. I scraped them and tried to clean them as well as the fuse which was rusty too. Gona replace the fuse and work more on the clips.
Thanks

 

[Gweiner]

Not to hijack this thread but what size fuse do you need for turn signals? I cant resd the size on the tiny fuse box in the glove box.

 

[Viperwolf1]

Not to hijack this thread but what size fuse do you need for turn signals? I cant resd the size on the tiny fuse box in the glove box.

Here you go.

 

[Gweiner]

Awesome, thanks Viperwolf. Hoping i just need to change fuse size. I had a 30A fuse in there.

 

[Gweiner]

Cant find a 14A fuse.

 

[Viperwolf1]

Cant find a 14A fuse.

http://shop.advanceautoparts.com/p/bussmann-fuse-pack-14-amps-5-pack-bp-sfe-14-rp/25984932-P

http://www.walmart.com/ip/Bussman-4...per-BP-SFE-14-RP-14-Amp-Fuse-5-Count/25858174

 

[aaronhooker]

Thanks for the links. Wanted one for my father's car too.