New wiring loom

[Wolfrace]

I'm having a few electrical problems with my TR6 and being advised that I might need a new wiring loom.Fuses are blowing because of shorting and I'm being told that wiring has been cobbled together over time. Does anyone have any idea how much this might cost and recommendations for doing the work? Car is in good condition otherwise.

[barkerwilliams]

https://www.autosparks.co.uk£350'ish

 

But that is for "standard original" you will want extras such as headlamp relays, fuel pump relay, cigarette lighter or USB sockets etc, etc.

 

The diagnosis you gave sounds a bit vague though. Wiring is quite logical I would print off a wiring diagram for your car and start marking up the circuits that have been proved to be faulty and see if that gives you a pointer to an area to be looked at.

 

If you buy a new harness and someone looks at it in a week or two with its extra relays etc they too might claim it has been cobbled together as it is not 1970's original - that might just be an excuse for lack of knowledge.

 

Fitting a loom is fairly straightforward technically, but does involve removing lots & lots of bits and pieces so the hours and costs would mount up rapidly if you have it done by a garage.

 

Your post reads as if you don't get your hands dirty with the car, perhaps a little wiring would be a good introduction.

 

Alan

[Fireman049]

Hi Wolfrace ~

 

I rewired my 3A although I'd never done it before! One of the secrets is ~ identify all the wires on you new harness and label them.

Then when removing the old harness cut off all the wires leaving a tail from each connection so that you have a colour reference.

A coloured wiring diagram is essential.

 

Tom.

[Wolfrace]

I'm having a few electrical problems with my TR6 and being advised that I might need a new wiring loom.Fuses are blowing because of shorting and I'm being told that wiring has been cobbled together over time. Does anyone have any idea how much this might cost and recommendations for doing the work? Car is in good condition otherwise.

 

https://www.autosparks.co.uk£350'ish

 

But that is for "standard original" you will want extras such as headlamp relays, fuel pump relay, cigarette lighter or USB sockets etc, etc.

 

The diagnosis you gave sounds a bit vague though. Wiring is quite logical I would print off a wiring diagram for your car and start marking up the circuits that have been proved to be faulty and see if that gives you a pointer to an area to be looked at.

 

If you buy a new harness and someone looks at it in a week or two with its extra relays etc they too might claim it has been cobbled together as it is not 1970's original - that might just be an excuse for lack of knowledge.

 

Fitting a loom is fairly straightforward technically, but does involve removing lots & lots of bits and pieces so the hours and costs would mount up rapidly if you have it done by a garage.

 

Your post reads as if you don't get your hands dirty with the car, perhaps a little wiring would be a good introduction.

 

Alan

Thanks Alan, not good at getting my hands dirty theses days, especially tracing wiring through the cabin. I used to be quite good at mechanical issues but electrical is another level. Just sceptical on the advice I've been given and so trying to find a reliable specialist to advise. I'll try my local TR group.

[Wolfrace]

Hi Wolfrace ~

 

I rewired my 3A although I'd never done it before! One of the secrets is ~ identify all the wires on you new harness and label them.

Then when removing the old harness cut off all the wires leaving a tail from each connection so that you have a colour reference.

A coloured wiring diagram is essential.

 

Tom.

Thanks for the tips Tom.

[tthomson]

Wiring on TRs is relatively simple, but some of the colours can be challenging for those who suffer from colour blindness.

 

In overview:

Any wire that is mainly brown is connected directly to the battery (sometimes through an intermediate item like an ammeter)

Any wire that is mainly white is connected to the ignition circuit

Any wire that is mainly purple is connected directly (via a fuse) to the battery

Any wire that is mainly green is connected (via a fuse) to the ignition circuit.

 

tAll of these colours are governed by wiring standard BS AU7

It is when people add to it without reference to this standard that you get problems.

 

It would be useful to know where you are based.

 

I am away for the next week, but happy to help or answer questions on my return.

 

Good luck

 

TT

[RogerH]

Hi Wolfrace (have you got a name),

 

where are you based?

Your local group will be a good start.

There tends to be a reasonable TR friendly garage not too far from most members.

 

The biggest problem with a dicky loom is not the failing of lights etc but the loom actually going up in flames.

The biggest concern area is behind the dash. If this catches fire you could lose the car.

 

Roger

[Mark69]

https://www.autosparks.co.uk£350'ish

 

But that is for "standard original" you will want extras such as headlamp relays, fuel pump relay, cigarette lighter or USB sockets etc, etc.

 

The diagnosis you gave sounds a bit vague though. Wiring is quite logical I would print off a wiring diagram for your car and start marking up the circuits that have been proved to be faulty and see if that gives you a pointer to an area to be looked at.

 

If you buy a new harness and someone looks at it in a week or two with its extra relays etc they too might claim it has been cobbled together as it is not 1970's original - that might just be an excuse for lack of knowledge.

 

Fitting a loom is fairly straightforward technically, but does involve removing lots & lots of bits and pieces so the hours and costs would mount up rapidly if you have it done by a garage.

 

Your post reads as if you don't get your hands dirty with the car, perhaps a little wiring would be a good introduction.

 

Alan[/quote

Yes you can add another £100 for all the extras, my loom was so shot I had no choice but to replace. With all the extra relays and separate power supply for electric fan and radio. Also ordered the gearbox overdrive wiring.

Total cost including post a little over£460.

[Fireman049]

Don't forget that your old loom will provide you with lengths of colour coded wiring for additional extras.

This is what I did.

 

Tom.

[Steve T]

Can we still buy the original colour wires? Just in case one wanted to fabricate their own loom.

[Fireman049]

Hi SteveT ~

 

Contact Vehicle Wiring Products, Ilkeston on 0115 930 5454. email: Sales@vehicleproducts.co.uk

 

Tom.

Edited November 4, 2017 by Fireman049

[RogerH]

Here you go Steve,

 

http://www.vehicle-wiring-products.eu/product.php/973/16-5-amp-1mm-sq-32-0-20

 

Hit the colour selection button - there is everything.

 

Roger

[Steve T]

Nice one guys. Will have to get the pin board out!!

[mike3739]

That will be a Pin Board Wizard then

 

Cheers

 

Mike

[Steve T]

^^????????