Only one of my blinkers was actually blinking on the instrument panel and on the taillight so i dug around and found that i had two flashers. One mounted behind the instrument panel and one hanging under the dash. My right taillight blinks and makes the click noise like usual but my left one is just a solid light both on the taillight and the instrument panel. One of the flashers is made of plastic and the other is made of metal. Is this common for '68 f-250?

 

Yes, one is for the turn signals the other is for your hazard flashers.
What is your front (parking) flasher doing?
That could be why it won't flash on left turns.
Bad grounding is notorious on the front light/ flasher housings

Chris

 

I didn't even realize i had a parking flasher. Where is it located?

Also do you know why on my truck the right taillight has two bulbs in it. One in a big chamber then the other is in a smaller chamber located right behind the white square on the taillight lens.
But on my left taillight i only have one main bulb. in the big chamber and where the second bulb would be there is a delete plate riveted on with nothing behind it.

Is this stock? or something the previous owner rigged up? I was thinking they maybe took a taillight housing from a different year and put it in...

 

You should have parking lamps in the grill, they are dual filament bulbs, like your rear stop lights. One filament is the parking lights the other filament is your front turn signal, I wasn't too clear on my initial reply. Any way your front left lamp may not be working.
It sounds like you have mixed Rear housings. The clear lens is for your back up lights.

Chris

 

If my front left lamp is not working will it affect my rear tailight? Also the previous owner had changed transmissions but did not hook up any backuplights to the tranny so if i get matching housings with the backup lights could i wire the backuplights to a switch in my cab?

 

Same taillamps: 1967/72 F100/350 Styleside; 1967/77 Bronco; 1969/74 Econoline.

Double filament bulb-clear: 1157 / Double filament bulb-amber: 1157NA.

4 way flashers use a H/D flasher, can also be used for the turn signals.

The 4 way flasher nestled inside a bracket that was mounted (w/1 screw) behind the dash adjacent to the radio.

 

I JUST BOUGHT A 68 F100 SHORTBED TURN SIGNALS AND BRAKE LIGHTS DONT WORK COULD THIS BE A FUSE? FEEL FREE TO EMAIL ME VV01F13@YAHOO.COM IM A CHICK DOIN THIS ALL MYSELF COULD REALLY USE SOME HELP CANT GET A REPAIR MANUAL FOR THIS THING.

 

What transmission do you have? Backup light switch is in different locations depending on tranny. Check the grounds as mentioned, possibly turn signal switch itself is dirty or def. Spray can of electrical cleaner can sometimes get them working.

 

What do your parking lights do when you turn them on? I sound to me like you might have either a burned out filament in your bulb or a bad ground. Another possibility is what I found on my truck, is that someone put in a single filament bulb into my park/turn housing. The blinker light staying on constant is a sign to the driver that something is wrong. As for your backup lights, is there a socket laying around somewhere back there? Perhaps it shorted and someone just cut it off. If the P O didn't hook up the switch to the transmission it should still be hanging around somewhere under your truck. Good luck.

 

I got all my lights workin it turned out just to be a bad bulb up in the parking lamps on the front. Turn signals and everything work a o ok now luckily it was a simple fix. I'm runnin a BorgWarner T-18 4 speed mannual transmission.

 

Your tail light housing with no backup bulb is likely from a 64-66 pickup.


mike

 

T-18 is one I don't know where the backup light switch is. Sure someone on here does. My NP435 is on the transmission itself. Much better to have it working correctly than seperate switch on dash somewhere and you forget and leave it on.

 

By all means, check the easy stuff first like fuses and flasher units. As the brake lights and turn signals are routed through the turn signal switch, that will probably be your next suspect. Here's a link to a 68 wiring diagram that may help....

http://www.fordification.com/tech/wiring/68-23.jpg


mike