TR6 Wiring harness

[Buckshot57]

1972 Triumph TR6.
I have decided to replace my wiring harness. Can anyone supply pros or cons on suppliers and product.

 

[NutmegCT]

Advance Auto-Wire usually gets good reviews:

ADVANCE AUTO WIRE

 

[mctriumph]

This is a terrible can of worms. The factory used 6 different harnesses over the years.
So it is not possible to get the exact harness for a particular car .You have to get what can be obtained
and be prepared for disappointment.
Unless the smoke has all leaked out ,my advise is save it. Buy new connectors clean all the ends and use dielectric
grease when assembling. Rewrap it as needed,
Mad dog

 

[TomMull]

Have a look at Autosparks in the UK. I've been told that they supply most of the British looms worldwide. Last time I contacted them a year or so ago they answered the phone and were very helpful. You may be able to source the correct harness for your car.

Mad Dogs suggestion is a good one also. Stripping and re-wrapping is viable also but it's time consuming and will require a couple of special crimpers to match the factory type connectors as well a supply of connectors and covers. I would not even consider using the common blue, red, yellow insulated things although those are ok for a patch or two.

With a little additional effort and wire, OK quite a bit of effort, you could build a new harness using your old unwrapped one. (That's the way they do it at Autosparks.) Quite a good selection of short lengths of colored and striped wire is available on line in short lengths.

Tom

 

[Sarastro]

This is a terrible can of worms. The factory used 6 different harnesses over the years.
So it is not possible to get the exact harness for a particular car .You have to get what can be obtained
and be prepared for disappointment.
Unless the smoke has all leaked out ,my advise is save it. Buy new connectors clean all the ends and use dielectric
grease when assembling. Rewrap it as needed,
Mad dog

I thoroughly agree. Lots of wiring harnesses are replaced unnecessarily. Unless the insulation is cracking or burned, there is no need to replace a wiring harness. Even if some areas are damaged, you can cut out the bad parts and replace them. If you absolutely must have the original colors, you can get wire with the right insulation color from the harness suppliers, elsewhere on line, or from a used harness sold on eBay by someone who replaced his harness unnecessarily. If the problem is the bullet connectors, they can be replaced, preferably with an improved connector. You can find automotive wiring connectors on Amazon.

 

[Rod-H]

I agree with trying to save what you have. A good source for repair supplies is > Welcome to British Wiring - classic British car wiring harnesses and components < . I've been very happy with their products, although trying to figure out how many strands a wire is vs. a wire gauge number can be a bit tricky.

Rod

 

[mezy]

The only downside to saving an old wiring loom, you need to check very carefully the condition of the copper in the wire.
DC current is bad for turning copper wire black, hence the name blackwire,
one check would be to use an ohm metre and check each wire end to end, not just for continuity but also for resistance.
I have had a few RC model aircraft meet with a very large heavy object, (planet earth) due to black wire

 

[Sarastro]

Electric current doesn't tarnish wire. It does get dark over the years; I've never seen it go so far as to turn black, but I'll believe it's possible. The cause is air exposure over time; various air pollutants, and possibly even outgassing from the insulation. The tarnish is usually nonconductive and you can't solder to it. You can remove the tarnish by dipping it in any weak acid; follow with an alkali dip to neutralize the acid. The copper itself never wears out.