(800) 853-2651
SHOP NOW

turn signals

T

teddy52food

Well-known Member
Left turn signals , brake lites and 4 way flashers work ok but when you signal for a right turn, all 4 lites flash. Is the turn signal switch bad or wires crossed somewhere? This is on a 1978 Ford F100 pickup.
 
Check all the grounds & bulbs / sockets good . Clean all contact points & lube with a dielectric grease . I'll bet that'll be your problem . God bless, Ken
 
Look for broken ground wires between the cab and chassis and bed and chassis. I saw that one summer about 1970 while working a bit for my uncle with a body shop. I ran a new ground wire from the bed to the frame and cab and fixed it.

Also check for broken grounds at the multiple purpose fixtures.

Gerald J.
 
I had this happen once on a 1985 F-150 a few years ago. The truck had one of those trailer light adapters in the back harness and the ground wire that came off of it has become loose and was corroded between the terminal and the frame.

Good Luck
 
Thanks for all the help. This truck had been last used 10 years ago and was given to us by a friend. It is a project for my youngest son. I thought too it could be a bad ground because of sitting so long. My son found it himself and feels good now. The problem was , someone put a single element bulb in the rear socket that should have a double. The center terminal of the bulb must be wide enough to contact both the tail lite and signal lite curcuits.
 
You must log in or register to reply here.

Similar threads

5
OT truck
Replies
4
Views
315
oldproudvet
O
B
2600 gas engine. Can't turn it off
Replies
8
Views
223
bluesgunner
B
Stroby
John Deere 4300 Flashers
Replies
1
Views
352
Jim.ME
J
Geo-TH,In
20+ year old GMC 2500?
Replies
9
Views
2K
Geo-TH,In
Geo-TH,In
J
Oliver (Cockshutt) 1365 4wd
Replies
10
Views
709
rrlund
R
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top