1978 F350 Tail light wiring diagram?
#1
1978 F350 Tail light wiring diagram?
Hi Guys,
I am having brake light troubles. Out back on the passenger side my tail light is acting funny. When I turn my lights on, the passenger side is very dim. It is also dim when I turn my right signal on. When I hit the brakes (with the lights off) it comes on also very dim. When I hit the brakes with the headlights on, the light doesn't come on at all. I took at look at the bulb socket and it seems ok, but only the 'headlight" filament would come on at all, the brighter brake light filament doesn't come on at ever. I a trailer light connection wired on last year and my tail lights have been acting funny ever since.
So, to finally cut to the chase, does anybody have a color coded wiring diagram of the tail lights for a 1978 (F350, if this matters). I'd really like to get my lights working properly.
Thanks,
Rod
I am having brake light troubles. Out back on the passenger side my tail light is acting funny. When I turn my lights on, the passenger side is very dim. It is also dim when I turn my right signal on. When I hit the brakes (with the lights off) it comes on also very dim. When I hit the brakes with the headlights on, the light doesn't come on at all. I took at look at the bulb socket and it seems ok, but only the 'headlight" filament would come on at all, the brighter brake light filament doesn't come on at ever. I a trailer light connection wired on last year and my tail lights have been acting funny ever since.
So, to finally cut to the chase, does anybody have a color coded wiring diagram of the tail lights for a 1978 (F350, if this matters). I'd really like to get my lights working properly.
Thanks,
Rod
#4
Sounds like a ground problem. Anytime one light dims or goes out when another light powered from a different circuit goes on, it is almost always a ground problem. The increased current creates a voltage drop across an unwanted resistance in the ground path, often referred to as "ground shift."
#5
Wiring problem
Hey guys....I have a problem...I bought a 1978 f150 ranger xlt and noticed that the wiring from the instrument cluster to the brake light harness is completely missing......the headlights work and when I turn them on the front side markers come on and front turns as well but when I put turning signal on the won't flash.could that be a bad flasher? And do u know were I can get all the wiring for the back lights? And also the gauge lights don't light up and none of the gauges work except the speedometer....... Do u also know were I can get all of that wiring....... If u can get back to me ide appreciate it.... Thanks
#6
Hey guys....I have a problem...I bought a 1978 f150 ranger xlt and noticed that the wiring from the instrument cluster to the brake light harness is completely missing......the headlights work and when I turn them on the front side markers come on and front turns as well but when I put turning signal on the won't flash.could that be a bad flasher? And do u know were I can get all the wiring for the back lights? And also the gauge lights don't light up and none of the gauges work except the speedometer....... Do u also know were I can get all of that wiring....... If u can get back to me ide appreciate it.... Thanks
Yes.
NPD, DC, Mac's, or salvage yard.
Btw, it's not good to revive a SEVEN-YEAR OLD THREAD THAT IS GENERALLY UNRELATED TO YOUR PROBLEM OF MISSING WIRING.
#7
Trending Topics
#11
Welcome to FTE, its all good. Like beer always ck the born on date and the last post reply, no sence in waking a zombie unless you have a spare body part to feed it. lol
X2 on ck the vendor list and read this for help. https://www.ford-trucks.com/forums/1...ml#post1812190
Turn and Stop Lamp Diagnosis for 70's Ford Pickup - Ford-Trucks.com
Centech Wire Custom Wiring Harnesses
Painless Performance
Hit the JY for a pieces of a way cheaper replacement harness.
X2 on ck the vendor list and read this for help. https://www.ford-trucks.com/forums/1...ml#post1812190
Turn and Stop Lamp Diagnosis for 70's Ford Pickup - Ford-Trucks.com
Centech Wire Custom Wiring Harnesses
Painless Performance
Hit the JY for a pieces of a way cheaper replacement harness.
Thread
Thread Starter
Forum
Replies
Last Post
Bigtruc
1973 - 1979 F-100 & Larger F-Series Trucks
3
06-25-2017 10:00 AM
abe
1948 - 1956 F1, F100 & Larger F-Series Trucks
1
06-24-2016 10:12 PM