• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)

Intermittent turn signals....


Jedi Warrior
I've got my service manuals ariving tomorrow, so I can start working on some of the vehicle's mechanical problems, but I'm wondering if anyone has any suggestions on where to start with intermittent turn signals? they don't work front or rear, in either dirrection most of the time. Every once in a while they will work. They don't light up at all, they're all permanently dead. My hazard lights do work however. thoughts?
Thanks! /ubbthreads/images/graemlins/thumbsup.gif
The turn signal power runs thru the hazzard switch. i would check there first. then all bulbs, wires and grounds. the biggest trouble spots i have seen are the bullet connectors leading to the front turn/markers lights. i have seen a perfectly good looking crimped on male bullet that went bad at the crimp. i would clean and grease all those connectors , and make sure the bulb sockets are in good shape. This should solve your problem.

Good luck

Mark /ubbthreads/images/graemlins/driving.gif


Jedi Warrior
mark, do you still think it could be faulty wiring past the hazard switch, since the hazard lights work fine? I would assume that since the hazard circuit is working properly, the probem has to be from the turn signal switch to the hazard switch...anything in that path?
Rob ,
i had hazzards that worked, but the turns didnt. i found a site that explained the circut to me. and the problem was in the hazzard switch. i jumped the haz sw, and turns started working. the turns wont work when the hazzards are on. the switch swaps power around.

i think this was the site


i still bet you have some intermittent grounds somwhere.
of course you may have some turn signal switch trouble as well. i would use a test lite at each of the 2 front corners first and check to be sure that you are getting power to the appropriate wires first . this helps to check grounds since the test lite can be grounded to the battery.

if you need the wire colors let me know.



Jedi Warrior
you were right mark, it's the hazard switch. I checked all the bulbs first, out of curiosity, stared at teh wiring diagrams for a while, then checked the flasher. Moved on to the hazard switch and sure enough, it's not connecting the turn signal switch to power. I bypassed it for the time being, so I have turn signals now but no hazard lights. I figure turn signals are a little more useful, even in NM where nobody but me uses them /ubbthreads/images/graemlins/rolleyes.gif

Anyway, thanks for the advice /ubbthreads/images/graemlins/thumbsup.gif
Great Rob,
Glad to hear you got it fixed. Dont feel to bad my hazzards dont work either. Those switches can be taken apart and cleaned, might be a thought. replacements are kind of pricey.

Keep it Running

Mark /ubbthreads/images/graemlins/driving.gif
Actually, I found my hazard switch quite easy to clean and reassemble. It now works great, and it took less than ten minutes. But, if the plastic is brittle you may destoy it. (nothing to lose though)
Similar threads
Thread starter Title Forum Replies Date
Jim_Stevens TR2/3/3A Intermittent starting Triumph 14
Griz Intermittent Misfire Austin Healey 33
S Intermittent operation of tachometer Austin Healey 9
Jim_Gruber Intermittent Horn Spridgets 2
T intermittent deflating tyre Austin Healey 6
Crankshaft TR2/3/3A Intermittent ignition switch problem Triumph 9
RedTR3 TR2/3/3A Periods of Intermittent Missing Triumph 34
doughairfield TR4/4A Intermittent vibration at 3000 RPM Triumph 2
alanjohnturner TR4/4A intermittent brake-light switch Triumph 11
M Intermittent Hard Starting on 99 XJ8 Trouble Code Jaguar 13
AUSMHLY intermittent right blinker Austin Healey 14
Tugboat TR2/3/3A TR3A Intermittent Pulling When Braking Triumph 5
Michael Oritt Intermittent short Austin Healey 14
R Intermittent starter Austin Healey 8
G Intermittent flasher [the TR that is] Triumph 8
nevets Intermittent sputtering Austin Healey 38
Shinsen774 Intermittent Stumble - Diagnosis? MG 7
R BJ8 overdrive intermittent Austin Healey 11
roscoe Intermittent weirdness Austin Healey 20
V Intermittent engine cut out 1989 v12 xjs Jaguar 9
athenssprite tach is intermittent Spridgets 5
healeyboz Intermittent problem finally fixed Spridgets 6
19_again intermittent power loss MG 0
Baz Intermittent miss? Spridgets 24
AUSMHLY Got intermittent wipers? Austin Healey 2
Dadandson Frustrating Intermittent Problem Spridgets 8
gsalt57tr3 Intermittent Start problem Triumph 1
MadRiver Slightly OT -- Intermittent short with my Tiger Triumph 14
Brosky Bizarre cooling leak....intermittent, too!! Triumph 0
M Intermittent Cooling Fans -'78 B MG 5
M Intermittent Wipers [the bad kind] MG 3
MGTF1250Dave Intermittent Electric Faults MG 9
M Intermittent starting problem Jaguar 1
T TR2/3/3A turn indicator bulbs Triumph 26
Got_All_4 TR5/TR250 Lost Turn Signals Triumph 2
BoyRacer LED Turn Signals Austin Healey 5
S TR2/3/3A LED turn signal -- panel flasher not working Triumph 5
R Turn Signal Knob goes off center Austin Healey 9
E MGB Turn signal bulb MG 5
E MGB Turn signals 65 mgb MG 4
M For Sale chrome turn button fasteners Austin Healey Classifieds 1
steveg Picture needed - front turn light Austin Healey 4
Nelson Turn signal beeper. Spridgets 14
M TR2/3/3A 1960 TR3A turn signal harness Triumph 6
nichola TR6 GP3 Camshaft won't turn Triumph 8
M TR6 Turn signal switch stalk Triumph 1
W MGB Turn signals on 78 MGB MG 3
jfarris TR2/3/3A Modified turn signals/brake lights on a 56 Triumph 6

Similar threads