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Triumph TR6 - Turnsignals and flashers don't work

I am restoring a 71 TR6 from Texas that all lights work except the turnsignals and flashers. No noise at relays and fuses under hood seem find. Any suggestions where is the best place to start?

John Brunatti
JOHN BRUNATTI

Hi John
I also have a '71. This is a common problem with TR6s that have the "Clear Hooters" brand of switches.
Your problem is most likely the rocker switch for the hazard flashers. turn on and off (rocker the switch) for the hazard flashers many times in succession. If you have some spray contact cleaner you miht even spray that into the switch. You will find that the hazard flashers will now work and so will the turn signals.

If this fails then remember there is the turn signal flasher unit mounted on the outside pannel of the passenger foot well. You can feel it just above the side carpeted pannel near the front of the pannel. A simple clean of the connectors might do the trick.
Power to the flashers and turn signals goes throught this unit. It is the fused purple wire that sends power to the flasher and turn signals.
Schematics for the '71 TR6 can be found at:

http://www.advanceautowire.com/
Click on STOCK SCHEMATICS on the left side...Thanks again Dan Masters.
Rick
Rick Crawford

Hi, my connections seem clean as there is very little corrosion on this car. I tried the hazzrd switch( off and on) no luck. If I bypass the flasher unit by disconnecting the wires and connecting to each other, should the signals work?

Is there an easy way to determine if it is the flasher switch or unit that is defective?

John
JOHN BRUNATTI

John
The Hazard switch is a direct connection to 12 Volts via the PURPLE wired fuse and the GREEN wired fuse. Turn the switch on and the 4 corner turn lights should start to flash. If they do not it could be the switch (dirty contacts). This is a common problem. You may think you have clean contacts but keep in mind the contacts are 37 years old.
If you look at the schematic I linked you to ( for the 1971 TR6), you will see that after the switch makes contact the other side of the switch is a Purple/Red wire going to W1 connection of the Hazard relay. With the hazard switch ON you should have 12 V at W1 connection ( assuming clean contacts at the switch). If you have 12Volts there then it is probably the hazard flasher that is the problem.

as far as the turn signals go...well look at the Hazard switch first for dirty contacts.


BOTTOM LINE
1:If both do not work clean the contacts of the hazard switch.
2: check both purple and green fuses...take a voltage reading on the feed side of the fuse. I strongly suggest you do not take for granted both fuses are OK.

Power to both turn and hazard lights go through the hazard switch.

"If I bypass the flasher unit by disconnecting the wires and connecting to each other, should the signals work?" I am sure you mean flasher switch here so yes the turns will work.
If you connect the Green and the Light Green/Brown wires together (bypassing the hazard switch) then the turns should work.
If you connect the Purple and the Purple/red wires together then the hazards should start flashing.
If both work after doing this then might I suggest you clean the contacts of the Hazard switch.

Rick

PS I must confess that this statemnet is incorrect:
"If this fails then remember there is the turn signal flasher unit mounted on the outside pannel of the passenger foot well. You can feel it just above the side carpeted pannel near the front of the pannel. A simple clean of the connectors might do the trick.
Power to the flashers and turn signals goes throught this unit." To correct this I should have said Power to the turn signals only (green wire) goes through this unit (not the flashers). BUT both systems get power through the hazard switch..... This is what makes it look like the hazard switch is at fault. You need to look at the schematic to see this.
Rick Crawford

What he said
DON KELLY

John
Did you get this resolved?

Post back with results so this thread will have a conclusion.
Rick


MAN this BBS is dead. Is everyone on holidays?
Rick Crawford

John
You out there??
Rick Crawford

Sorry Rick, Didn't notice your recent inquiry. I am tackling a couple of things at the same time, leaking carbs and electrical issues. Very careful not to mix the two.

I solved several electrical issues by cleaning the terminals at the fuse box and relays. However, the hazzard and signals still do not work. The purple wire was at the W2 not W1 and regardless there is no current. Therefore, I assume the hazzard switch is defective or dirty and must be removed.

Currently, I am removing the speedometer as you may see by a recent thread.

Thanks, John
JOHN BRUNATTI

This thread was discussed between 18/12/2007 and 01/02/2008

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