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MG TD TF 1500 - Dash panel wiring

Before I cut something, I need some clarification.

The wiring harness I have for the instrument panel has eyelets on the red/white and red wires that go to the dash light switch.

The switch has terminals for bare wires.

Any reason the manufacturer put the eyelets on?




Bruce Cunha

Got it figured out. The later TD has a rheostat for the dash lights. The early, just an on/off switch.
Bruce Cunha

The dash harness for the early TD is different not only with the rheostat eyelets but also the number and type of light sockets.
W A Chasser

Yes, I found that out today. None of the wiring diagrams are correct for the earlier TD. None have the three lights that attach to the back of the dash for the Tach and Speedo.

We got it all figured out and Chris is going to document it.

If anyone has seen a wiring diagram that includes the lights mounted on the back of the dash for the tach and speedo, I would love a copy.

Here is what I got done today. Still have the dash lights to wire in.



Bruce Cunha

Bruce,

Also none of the wiring diagrams, I have seen, show the clock connection.

John
J Scragg

Early TD wiring diagram, includes the lights mounted on the back of the dash and in the tach and speedo, but no clock connection.

R WILSON

Also on Page N.21 of Workshop Manual, Issue 5 7/55. Bud
Bud Krueger

R. Wilson and Bud. Neither of these diagrams shows the correct under-dash lighting wiring. Both show bulbs in the speedo and tach.

The cars with the chronometric speedo and tach do not have bulbs in the units. They had three bulbs with holders screwed into the dash. They sat on the left and right lower area of the speedo and tach and one in between.

There would be a ground wire going to each lamp bracket and a power wire using the same socket as the ones on the instrument panel.

Everything else is pretty much the same. It would be great if we actually had a diagram that shows the correct lighting connections.

I may have to build one if no one knows of one that shows the above.
Bruce Cunha

What's on a TC wiring diagram? Bud
Bud Krueger

Found a TC wiring diagram, in color, but it doesn't show a tachometer.
https://ttypes.org/mg-tc-wiring-diagram-in-colour/. But it shows dash lighting and clock. Bud
Bud Krueger

Someone probably has a program that can do this better, but here is my attempt at a diagram for the dash lights for the early TD.



Bruce Cunha

This thread was discussed between 03/12/2022 and 06/12/2022

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