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Rewiring
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Ray White



Joined: 02 Dec 2014
Posts: 6283
Location: Derby

PostPosted: Fri Oct 30, 2020 1:20 am    Post subject: Rewiring Reply with quote

I have a new wiring loom for the TC rewire. This has been necessary because of the hap hazard way in which the p/o wired the car. I have removed all the wiring so I shall be starting from scratch with a new purpose made TC wiring loom from Auto-sparks.

When I rewired my 1930 Austin Swallow I only had two colours to deal with; red and black. The MG TC loom has a bewildering array of different colours...however, I am sure they will be a help when I get down to following the wiring diagram.

One question I have is that due to my decision to alter the dashboard layout there are some things like the horn push which are going to require longer lengths of wire than is available in the loom. (Incidentally, there is a separate dashboard harness) . Should I cut off short Lengths of the correct coloured wire and attach them to the horn push with a plain "joiner" to the relevant loom wires?

Or should I try and source matching multi coloured wires ? and are they available?
Short (1M) lengths of suitably rated Flecked coloured wires seem hard to locate.
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Penguin45



Joined: 28 Jul 2014
Posts: 381
Location: Padiham

PostPosted: Fri Oct 30, 2020 10:40 am    Post subject: Reply with quote

Hi Ray,

AUTO ELECTRIC SUPPLIES sell coloured braided wire by the metre.

I really wouldn't crimp join any extensions on if you want a long service life. It's more fiddly, but solder joints and a short length of shrink wrap sleeving over the joint will give much better and long lasting results. It's all going to be tucked up behind the dashboard, so they won't be seen.

Chris.
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'67 Wolseley MkI 18/85, '70 Austin MkII 1800 The Landcrab Forum.
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Ray White



Joined: 02 Dec 2014
Posts: 6283
Location: Derby

PostPosted: Fri Oct 30, 2020 11:24 am    Post subject: Reply with quote

Thank you very much for that Chris. I think you are right and I will be soldering connections where ever possible. I think it would make more sense (and look better) - if I have to extend wires - to do so in the same colours.

Started work last night. I have invested in a 100 Watt Weller soldering iron which is FANTASTIC!!!

As I am still waiting for the new body tub, what I plan on doing is constructing a temporary trestle straddling the chassis with a seat. That way, I can lay my old dashboard upside down and work out which wires go where.



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Last edited by Ray White on Fri Oct 30, 2020 1:06 pm; edited 1 time in total
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47Jag



Joined: 26 Jun 2008
Posts: 1480
Location: Bothwell, Scotland

PostPosted: Fri Oct 30, 2020 11:28 am    Post subject: Reply with quote

Ray,

Just tell Auto-Sparks what you want extended and they will do it for you.

Art
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Ray White



Joined: 02 Dec 2014
Posts: 6283
Location: Derby

PostPosted: Fri Oct 30, 2020 1:09 pm    Post subject: Reply with quote

47Jag wrote:
Ray,

Just tell Auto-Sparks what you want extended and they will do it for you.

Art


I already have the loom here. I bought it some months ago and have fitted it to the chassis and bulkhead.

I did ask them to include indicators and a reversing light wire which they have done.

Subsequently I have found I will probably need a bit more wire behind the dash.
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47Jag



Joined: 26 Jun 2008
Posts: 1480
Location: Bothwell, Scotland

PostPosted: Fri Oct 30, 2020 2:54 pm    Post subject: Reply with quote

Ray,

Why don't you ask them for what you need, they seem like very helpful people to me. They are in the process of making up a harness for my Jaguar just now.

Art
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Ray White



Joined: 02 Dec 2014
Posts: 6283
Location: Derby

PostPosted: Fri Oct 30, 2020 3:32 pm    Post subject: Reply with quote

47Jag wrote:
Ray,

Why don't you ask them for what you need, they seem like very helpful people to me. They are in the process of making up a harness for my Jaguar just now.

Art


I don't know yet what I need but it will only be short lengths to go behind the dash. I bought the loom through the Octagon Club and I know they are over worked as it is so I will take up Chris's suggestion and order the little bits I need from AES. Thanks for your input all the same.

Any help with the rewire is appreciated. Wink
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ukdave2002



Joined: 23 Nov 2007
Posts: 4100
Location: South Cheshire

PostPosted: Fri Oct 30, 2020 3:54 pm    Post subject: Reply with quote

These are really good and only pence each, keep the wiring colours correct as they make fitting and fault finding so much easier. Smile

https://youtu.be/VrQxt9ubFDA
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Peter_L



Joined: 10 Apr 2008
Posts: 2680
Location: New Brunswick. Canada.

PostPosted: Fri Oct 30, 2020 4:13 pm    Post subject: Reply with quote

ukdave2002 wrote:
These are really good and only pence each, keep the wiring colours correct as they make fitting and fault finding so much easier. Smile

https://youtu.be/VrQxt9ubFDA


I used to butt solder auto wires then shrink tube them until I found these things. Did some last year on a boat trailer excellent result.

Amazon.ca heat shrink solder butt connectors should find them at Amazon.co.uk
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Ray White



Joined: 02 Dec 2014
Posts: 6283
Location: Derby

PostPosted: Fri Oct 30, 2020 4:54 pm    Post subject: Reply with quote

Really interesting and so NEAT !

I have never seen those before.! What else is out there that I don't know about???
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alastairq



Joined: 14 Oct 2016
Posts: 1950
Location: East Yorkshire

PostPosted: Fri Oct 30, 2020 5:35 pm    Post subject: Reply with quote

Low melt solder can also be separated purely by dunking in hot or boiling water...
_________________
Dellow Mk2, 1951 built, reg 1952.
Fiat 126 BIS
Cannon special [1996 registered. Built in 1950's]
----------------------------------------------
Ford Pop chassis, Ashley 1172 bodyshell, in pieces.
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peter scott



Joined: 18 Dec 2007
Posts: 7113
Location: Edinburgh

PostPosted: Fri Oct 30, 2020 6:11 pm    Post subject: Reply with quote

alastairq wrote:
Low melt solder can also be separated purely by dunking in hot or boiling water...


Ah! Wood's metal. They used to make joke tea spoons out of it.

Peter
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1939 SS Jaguar 2 1/2 litre saloon
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Peter_L



Joined: 10 Apr 2008
Posts: 2680
Location: New Brunswick. Canada.

PostPosted: Fri Oct 30, 2020 6:19 pm    Post subject: Reply with quote

Product spec's give solder minimum temp as 138 deg C.

Note that they may not always be a suitable solution if working in a confined space where a heat gun is not a suitable tool. I wonder if anyone has made a hot clamp that would go around the connector ??
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alastairq



Joined: 14 Oct 2016
Posts: 1950
Location: East Yorkshire

PostPosted: Fri Oct 30, 2020 6:51 pm    Post subject: Reply with quote

What about one of those gas fired pencil blow torches? Good for silver soldering tiny parts together... Very directable flame too....
Or don't the connectors like direct flame?
_________________
Dellow Mk2, 1951 built, reg 1952.
Fiat 126 BIS
Cannon special [1996 registered. Built in 1950's]
----------------------------------------------
Ford Pop chassis, Ashley 1172 bodyshell, in pieces.
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MVPeters



Joined: 28 Aug 2008
Posts: 822
Location: Northern MA, USA

PostPosted: Fri Oct 30, 2020 7:53 pm    Post subject: Reply with quote

A butane cigarette lighter should be enough.
(I just ordered some connectors - I'll let you know!).
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2002 MINI Cooper 'S'
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