Why are tail lights staying on constantly?

Bevy63
5

Asked by Bevy63 May 09, 2013 at 09:47 AM about the 1965 Ford Thunderbird

Question type: Maintenance & Repair

1965 Thunderbird (standard model)...
The TAIL LIGHTS are on constantly even when all light switches are in the "off" position.
Probable cause or repair suggestions?????

6 Answers

oldtimer37
2,255

the 65 has the sequential taillights and if you have the original module it may be shorted out. The unit is in the trunk by the back seat. Check it first. If it is bad, you may be able to find an original but there are third party solid state units today that eliminate this problem.

AutoOneMobile
15

"Short to power" somewhere in the tail-light circuit, Start at the tail-lights in the rear and if you can trace the wires back to the fuse or relay looking for burnt or open spots along the wire.

oldtimer37
2,255

Sorry, if they were shorted, they would not work at all and blow a fuse. It is more than likely in the flasher assy.

AutoOneMobile
15

If it was in the flasher assy then wouldn't the tail-lights flash with the turn signals? And i mean short the power not short to ground, like feedback from another power source along the wire somewhere. But you could just as well be right so i would check that too.

oldtimer37
2,255

I don't know if you have ever seen an original 65 Bird flasher unit but it is NOT solid state and is actually a good piece of electronic engineering. It is possible that the flasher circuit could have an open circuit and not flash but just keep the lights on.

Alan Thayer
0

if the brake lights are on and only the brake lights not running lights check the brake pedal the switch underneath it is staying on you have to adjust it back it off a little until it goes off and comes on when the brake pedal is applyed.and off when it is let off.

Your Answer

Add photo

Related Questions

Thunderbird
Looking for a Used Thunderbird in your area?
CarGurus has 855 nationwide Thunderbird listings starting at $7,400.
ZIP:

Search Ford Thunderbird Questions

Ford Thunderbird Experts

#1 Tom Demyan
Tom Demyan
Reputation 990
#2 oldtimer37
oldtimer37
Reputation 970
#3 tennisshoes
tennisshoes
Reputation 710
View All

Related Models For Sale

Used Ford Mustang"
612 Great Deals out of 33,970 listings starting at $1,595
Used Chevrolet Corvette"
285 Great Deals out of 10,352 listings starting at $2,999
Used Volkswagen Beetle"
203 Great Deals out of 8,813 listings starting at $1,499

Used Cars For Sale

2005 Ford Thunderbird For Sale
62 listings starting at $9,999
2004 Ford Thunderbird For Sale
4 Great Deals out of 112 listings starting at $10,495
2003 Ford Thunderbird For Sale
3 Great Deals out of 137 listings starting at $7,400
2002 Ford Thunderbird For Sale
17 Great Deals out of 285 listings starting at $8,299