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Triumph TR6 - Relays - Need Help with Wiring

Can you point me to a good source or help me with relays...

Using the workshop manual and searching archives they are not yielding the info I need. I could use a factory original car sitting beside me in the garage as a guide. ;)

There are two relays located on the left sidewall in the engine compartment behind the LF wheel arch. The bottom one... based on all the purple wires, seems to be the horn relay. I have followed the workshop manual for terminals: Purple & Black to W1, Purple (single wire?) to W2, Purple & Yellow to C1, and Purple to C2. There's a second purple wire coming out of the connector of this purple wire which is not mentioned in the book. Does it attach to the second post on C1? BTW, even when I attach it to C1 the horns do not work. Alas...

The other relay above the horn relay had black wires, a white wire and a black and blue wire. It's a mystery to me since the colour coding does not match up with an OD or Hazzard relay.

Should I buy the Dan Masters book?

Ken

Ken Shaddock

Yes buy that book. a great help. Do you have these on your computer
http://www.advanceautowire.com/

Go to schematics and then your year and make. Maybe this will help
DON KELLY

Ken,
Your restoration shop has done you a job again. You have your wires crossed. Here's the correct wiring...keyed to your comments:

There are two relays located on the left sidewall in the engine compartment behind the LF wheel arch. The bottom one... based on all the purple wires, seems to be the horn relay. I have followed the workshop manual for terminals:
1.) Purple & Black to W1,
[NO PURPLE/BLACK GOES FROM THE HORN BUTTON TO W-2; IT IS GROUNDED AT THE HORN BUTTON]
2.) Purple (single wire?) to W2,
[NO, THE SINGLE PURPLE WIRE GOES FROM THE FUSE BOX TO C-2 THEN A SHORT PURPLE WIRE TO W-1, OR IF YOU RATHER, FIRST TO W-1, THEN TO C-2]
3,) Purple & Yellow to C1,
[YES, PURPLE/YELLOW GOES FROM C-1 TO THE LEFT SIDE HORN, THEN TO THE RIGHT SIDE HORN, BOTH ARE GROUNDED]
4.)and Purple to C2. There's a second purple wire coming out of the connector of this purple wire which is not mentioned in the book. Does it attach to the second post on C1?
[NO, SEE ANSWER TO #2 ABOVE]
5.), even when I attach it to C1 the horns do not work. Alas...
TRY IT NOW!!
THIS SEEMS TO BE CONSISTENT ACROSS THEY YEARS 70-76; 69 HAS NO RELAY AND IS WIRED DIRECTLY FROM THE FUSE BOX TO THE HORNS, THEN TO THE BUTTON.

The other relay above the horn relay had black wires, a white wire and a black and blue wire. It's a mystery to me since the colour coding does not match up with an OD or Hazzard relay. SEE NEXT NOTE.
Doug Baker

Ken,
Sorry for all cap in the note above, but that proved the best way to differentiate. To continue...

The other relay above the horn relay had black wires, a white wire and a black and blue wire. It's a mystery to me since the colour coding does not match up with an OD or Hazzard relay.

Ken, I don't know about the colors, but what you describe, this should be your hazard relay. It should be located just fore of the fuse box and above the horn relay and It SHOULD have a Purple wire from the fuse box at the same origination point as the horn relay running to "B", then from "L", a Light Green/Pink wire to a position on the Hazard switch. Or so says the Lucas Guru, Dan Masters if I read his "Electrical Maintenance Handbook" correctly.

AND YES, you do need to get a copy. Essential part of the TR-6 owner's library:-) Let us know if this turns out OK.
db
Doug Baker

Hi Doug... many thanks for jumping in here to help. I will indeed order the Guru's book. In the meantime I followed your steps to no avail. Note that there are two males on terminal on C1 and one has nothing on it. Next I'll swap out the new fuses in case I have a bad one, I check the wires at the horns to make sure I have a good ground and I'll look at that black & purple ground under the horn button.

Re the other relay, here's what I have left in terms of unconnected wires:

Single white w/orange stripe
Single green w/white stripe
Single purple
Single black with blue stripe
Two blacks with female terminal ends that have been connect to one another with a short black wire.

Spaghetti anyone?

I did not understand your reference to "the horn relay running to B, then from L" etc. What are B & L? The males on the hazzard relay have the same identification as the horn relay. C1, W1, etc.

Ken
Ken Shaddock

Me again Doug...

I have printed off what I could of the schematic at that site (11x17 image loses content on 8 1/2x11) and thus see your reference to B&L. That item I see is the Hazzard flasher. Will check it out and then will track down this other mystery relay and what wires go where on it.

Ken
Ken Shaddock

Excellent comments Doug!

Ken: the wiring diagram for the '76 is right on with the exception of that single wire, black with blue which emerges from the loom along with the horn wires for the relay. I would really like to know where this wire terminates.. and what it might be for.

Check under the steering column area for a bullet connector on a purple wire (wire emerges from the column) and ensure that it is correctly connected. This may take care of your horn troubles. On the other hand, if you find power up to the horns and the horns themselves do not sound (or barely sound) , there is a small bolt on the top of each horn that can be adjusted to maximize reverberation.

I use dielectric grease on all connections after thorough cleaning (dremel tool with a SS wire brush). After reinstalling the wiring loom, everything worked as it was supposed to... so far.

I would suggest printing the wiring diagram onto four sheets of paper (unless you have access to a 11x17 colour printer) and cutting and pasting together (old method) then having the whole thing laminated. Reading it will be easy and the smears and smudges will wipe off too.

Keep on Ken!

Cheers, Rob
Rob Gibbs

Ken,
The other wires on your mystery relay MAY have something to do with the seat belt buzzer, if your's is in place and functional. Along with the other tests Rob suggested, do try the horns with a direct power feed and a good ground to make they indeed work. If not all your other efforts are to no avail. The high pitch should be the horn on the left side and the low on the right.
db
Doug Baker

Ken- Copy the schematic on a thumb drive. Take it to a Kinko's and have them blow it up and laminate it. Too Cool.
That way you can write on it with the appropriate marker and clean it later.
Kind of like this, just doesn't have to be as big
DON KELLY

Ken- Copy the schematic on a thumb drive. Take it to a Kinko's and have them blow it up and laminate it. Too Cool.
That way you can write on it with the appropriate marker and clean it later.
Kind of like this, just doesn't have to be as big

http://s123.photobucket.com/albums/o316/donkelly23/?action=view¤t=Schematicpic.png
DON KELLY

Hi y'all... just came in from the garage to order more parts. My keyboard is getting grease on it :).

Horn Relay: The Advance Auto Wire drawing and your instructions were perfect (thanks guys) for the horn relay HOWEVER, my "restoration friend" did not install the Horn Connection Brush behind the horn button so Gene Krupa could have played his Sing Sing Sing solo on that button and no horns would be blowing.

The Mystery Relay: Apparently, this unit exists only on the 76 year and it's purpose is to run a series of warning light safety checks when the key is turned on. Octagon Motor Group knew this and is sending me a wiring diagram for the mystery relay and the location of the twinned blacks, the blue/black, the white/orange, the green/white and the purple. In case anyone else has a 76 I will share this solution when I get the drawing. The Advance drawing does not show this relay nor does the shop manual cover it.

C'est la vie.

Ken
Ken Shaddock

Must have been a Canadian car,eh?

Here is a good info site on relays
http://www.traxide.com.au/Relay_Info.html
DON KELLY

Oh fer sure eh... hockey pucks for motor mounts and a free 2-4 with each purchase eh.

Thx for the relay info Don. That too will help.

Ken

PS. I have interior lights, my horn makes a click sound when I ground out the contacts under the button (brush on order), the 4-ways are flashing, and I haven't lost anything I previously had in the process. I've also spoken with Double S exhaust in Victoria BC and find that the installation was done poorly... no surprise. Will hopefully fix on a hoist Thursday.

Top down weather here and I'm stuck without a tag until I get a safety done. May push it out of the garage into the and have lunch in it. Working on these LBC's is addictive, I'm hooked and my wife's thinking there's another woman. Gotta take Sunday (21st) off though... our 40th wedding using wedding cars tonbridge anniversary... I need to show up for that one. ;)
Ken Shaddock

This thread was discussed between 13/09/2008 and 16/09/2008

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