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MG TC
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Do you like or dislike the new dashboard ?
Yes I do like the new dashboard
100%
 100%  [ 7 ]
No I do not like the new dashboard
0%
 0%  [ 0 ]
Total Votes : 7

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ukdave2002



Joined: 23 Nov 2007
Posts: 4240
Location: South Cheshire

PostPosted: Wed Oct 08, 2025 11:41 am    Post subject: Reply with quote

Is the loom "pinched" anywhere? When I worked for a VCR manufacturer, a common fault on machines was caused by by wires being trapped/pinched normally where the cassette mechanism was screwed to the VCR chassis during production.
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Wed Oct 08, 2025 1:20 pm    Post subject: Reply with quote

ukdave2002 wrote:
Is the loom "pinched" anywhere? When I worked for a VCR manufacturer, a common fault on machines was caused by by wires being trapped/pinched normally where the cassette mechanism was screwed to the VCR chassis during production.


This is a distinct possibility. The correct route through the narrow chassis rails is a tortuous one.
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ukdave2002



Joined: 23 Nov 2007
Posts: 4240
Location: South Cheshire

PostPosted: Wed Oct 08, 2025 2:15 pm    Post subject: Reply with quote

Ray White wrote:
ukdave2002 wrote:
Is the loom "pinched" anywhere? When I worked for a VCR manufacturer, a common fault on machines was caused by by wires being trapped/pinched normally where the cassette mechanism was screwed to the VCR chassis during production.


This is a distinct possibility. The correct route through the narrow chassis rails is a tortuous one.


When we released the pressure on the pinched wire, the fault would clear and no amount of wiggling the (now released) wire near the pinched area could reproduce the fault (i.e. it wasn't damaged). I never really understood the science behind this Confused One of the senior Japanese Technicians explained that a phenonium called Constriction Resistance, could be introduced when a stranded cable was pinched, still don't understand why pinching caused this, but I saw loads of faults rectified by simply releasing the pressure on the cable.
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Wed Oct 08, 2025 2:33 pm    Post subject: Reply with quote

ukdave2002 wrote:


When we released the pressure on the pinched wire, the fault would clear and no amount of wiggling the (now released) wire near the pinched area could reproduce the fault (i.e. it wasn't damaged). I never really understood the science behind this Confused One of the senior Japanese Technicians explained that a phenonium called Constriction Resistance, could be introduced when a stranded cable was pinched, still don't understand why pinching caused this, but I saw loads of faults rectified by simply releasing the pressure on the cable.


I think so too. This is what I think happened to the off side. When I took the wiring out of the chassis/wing stay tube the full 12 Volts returned.
Now the same thing has happened to the near side.

GRRRRRR Evil or Very Mad Twisted Evil
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Wed Oct 08, 2025 5:59 pm    Post subject: Reply with quote

Persistance pays.

To everyone's relief, I expect, I have at last resolved my headlamp wiring problems. A bit of fiddling and faffing about and I now have a full set of working headlamps. Both high and low bean working as they should.

( I even have a nice purple idiot light to show high beam is working...as if it wasn't obvious!)

I have it so the head and side lights (and panel lights) operate through the ignition. This will ensure that I can't leave anything on without the key in the ignition; that should save me returning to a flat battery or even a burned out ignition coil.

I am also celebrating the fact that I now have a fully working horn, fog lamp and flashing indicators. (Incidentally only USA exports of the TC were fitted with indicators from the factory!)

Perhaps now I can get on with finishing this epic rebuild. I just hope the car goes reasonably well despite all the extra weight and steers in a straight line.

Before getting ahead of myself, however, I have to finish the hood and side screens.

.
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Penman



Joined: 23 Nov 2007
Posts: 4863
Location: Swindon, Wilts.

PostPosted: Wed Oct 08, 2025 7:46 pm    Post subject: Reply with quote

Have you got separate switching for parking lights or ar you going to use one of those single bulb units which we used to hang on the window on he side where the passing traffic was?[img]https://i.ebayimg.com/images/g/dbIAAOSw8ednyyZ4/s-l1600.webp[/img]
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Any 2 from:-
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Wed Oct 08, 2025 8:24 pm    Post subject: Reply with quote

Penman wrote:
Have you got separate switching for parking lights or ar you going to use one of those single bulb units which we used to hang on the window on he side where the passing traffic was?[img]https://i.ebayimg.com/images/g/dbIAAOSw8ednyyZ4/s-l1600.webp[/img]


I have to admit that crossed my mind and I came to the conclusion that I could use a portable parking light.(kept under the seat). I have subsequently realised that without proper windows there would be nowhere to hang it. Perhaps a magnetic one could be used?.
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Thu Oct 09, 2025 1:11 pm    Post subject: Reply with quote

After all the disruption I have now come to a standstill because I can't find the chrome screws that hold the headlamp rims on.

I don't know where to get replacements.

Mad
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Thu Oct 09, 2025 1:12 pm    Post subject: Reply with quote

After all the disruption I have now come to a standstill because I can't find the chrome screws that hold the headlamp rims on. They go right at the top of the rims. I had them specially chrome plated.

I don't know where to get replacements.

Mad
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Penman



Joined: 23 Nov 2007
Posts: 4863
Location: Swindon, Wilts.

PostPosted: Thu Oct 09, 2025 1:34 pm    Post subject: Reply with quote

Position yourself in front of the car, with the unfastened rims on the headlights, screwdriver in hand, re-enact taking them off. that just might jog the little grey cells into remembering what you did with them.
_________________
Bristols should always come in pairs.

Any 2 from:-
Straight 6
V8 V10
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alastairq



Joined: 14 Oct 2016
Posts: 2121
Location: East Yorkshire

PostPosted: Thu Oct 09, 2025 2:21 pm    Post subject: Reply with quote

Is there a large magnet sitting close by?? Just wonderin'!!
_________________
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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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Thu Oct 09, 2025 2:24 pm    Post subject: Reply with quote

Penman wrote:
Position yourself in front of the car, with the unfastened rims on the headlights, screwdriver in hand, re-enact taking them off. that just might jog the little grey cells into remembering what you did with them.


I have also misplaced the little clips that go with the screws. I would have realised that they were important and probably put them down together somewhere for safekeeping. The logical place to have put them would be with the lamps, rims and lenses.
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Thu Oct 09, 2025 5:34 pm    Post subject: Reply with quote

There is no fool like an old fool...and I am an old fool. I have been getting the rim of the headlamp mixed up with that of the fog lamp.

There is a screw and clip in the fog lamp and no screw in the headlamp. I have therefore wasted valuable time looking for something that doesn't even exist!!

I now have the headlamps finished. Rolling Eyes
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Ray White



Joined: 02 Dec 2014
Posts: 7128
Location: Derby

PostPosted: Thu Oct 09, 2025 5:41 pm    Post subject: Reply with quote

alastairq wrote:
Is there a large magnet sitting close by?? Just wonderin'!!


Funny you should say that. I once spent ages looking for a nut under the car. I was using a work lamp and eventually noticed the nut had stuck to the magnet on the lamp. Rolling Eyes
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badhuis



Joined: 20 Aug 2008
Posts: 1469
Location: Netherlands

PostPosted: Thu Oct 09, 2025 6:10 pm    Post subject: Reply with quote

Ray White wrote:
alastairq wrote:
Is there a large magnet sitting close by?? Just wonderin'!!


Funny you should say that. I once spent ages looking for a nut under the car. I was using a work lamp and eventually noticed the nut had stuck to the magnet on the lamp. Rolling Eyes


Happened to me more than once. Very annoying having to look for a screw or a bolt, cursing myself for being so ignorant, then to find it attached to the lamp. Few months later the same happened - why did I forget to look at the lamp? Very Happy
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