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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - Wiring Diagrams

For those of you familiar with the work of Doug Jacobs at http://www.slash5.com, I will just say that he now has the Bugeye wiring diagram, too.

For those who have no idea what I mean, Doug has a side business selling wiring diagrams for some old BMW cars and motorcycles, some Triumphs, and a lot of MGs. He has 10 different diagrams to cover the MGB line as well as a couple for the MGC, the T-Series from the TA through the TF and all of the Spridgets.

The diagrams are 11x17", heavily laminated and in colour. The devices on it are labelled with the actual name of the device rather than a cross-reference number. They are based on the factory diagrams and are quite accurate (not claiming perfection, but darn close). As much as is possible, the diagrams reflect the physical layout of the wiring in the car, so that, for instance, all of the junctions connecting the rear harness to the front harness are all lined up together. My diagram has been extremely useful to me and I think I will buy the whole line of Spridget diagrams if he is back at the Chicagoland MG Club's annual swapmeet this year.

No financial interest, just a happy customer who wants him to stay in business as long as possible.

David "wired" Lieb
David Lieb

http://www.slash5.com/
gordon lawson

Thanks... ordered one.
gordon.b.lawson '53TD

ditto
John James

I'm confused,,,,, slash5 lists "MGTD Early 1950 to 1953" and "MGTD Late 1950 to 1953" (note same years) "with foot operated dip switch" Did TD's ever have a foot dip switch ?????

SPW
Steve Wincze

Steve,

According to "The T type Restoration Handbook" from the new england MG T register, the foot operated type became standard from TD 18883 (August 19, 1952.)

Evan


Evan Ford - TD 27621

Mine has one up on the inside firewall....
gordon.b.lawson '53TD

Thanks David,

I also ordered one for my 1950 TD. No problem there I know I need the MGTD Early one. My real problem is that a PDO rewired the thing, doing a good job, it is not even close to the factory harness. The good part is that I have had no problems with the job he did in the many years I have had the car.

Roger

Roger Thompson

Ya gotta hate those, Roger. If he had wired it all in white (I had a friend with a kit Cobra that way) or it was faulty, you could readily justify ripping it out and doing it concours. But when it doesn't fail and give you the excuse, you are stuck with it eating away at you with no good excuse to fix it.
David "still lusting for a TD, but the heart is still out-voted by wallet, brain, and garage space" LiebLieb
David Lieb

David,

I couldn't access www.slash5.com. Am I the only one?

Gord Clark
Rockburn, Qué.
Gordon A. Clark

What's wrong with the wiring diagrams in the workshop manual ? Ok I am as old as my TD and my eyes aren't as good as they used to be but englarging them x2 on the photocopier solved that problem at no cost and with half a dozen copies it doesn't matter if I handle them with dirty hands.


Jan T
J Targosz

Jan
I will frame mine, hang it on the wall and sit at my desk admiring at it!
Only joking
John
John James

Gord... use the link in my posting at the top... there is an extra comma in Daves link
gordon.b.lawson '53TD

Jan,
X2 photocopies certainly cost somebody something ;-)
I haven't checked the workshop diagrams for a TD, but from the perspective of my 1972 midget the benefits are that there is better contrast, 11" by 17", the wires are in colour (the clolours of the actual wires, not random colours), the devices are labelled with their actual names so that you do not have to keep referring to the list to figure out what number 57 is, and nice heavy lamination. Not that big of a deal for a TD perhaps, but there are a lot more circuits in a 72 Midget than there are in a TD, darn it!

Gord,
Gordon is correct, I didn't think that the bbs software would include the comma in the url, since it really isn't a legal character (as a former English major in college {NOT Bumsore}, I do like to put commas into grammatically-correct positions occasionally). Unfortunately, I was wrong, so the link did not work... Gordon got it right with his http://www.slash5.com
david Lieb
David Lieb

Having read the thread earlier this morning, I ordered the wiring chart for my 53TD. I got an immediate and friendly response from Doug.

My TD also has the dimmer high on the firewall above the clutch pedal
Steve Hess

Gord & David,

Correct URL worked well. Thanks.

I'll order one after Christmas.

Gord Clark
Rockburn, Qué.
Gordon A. Clark

There are actually three different wiring diagrams for the TD, but I don't remember off the top of my head where the breaking point is. I believe that it has to do with the turn signals and then the dimmer switch location. One can make a enlarged copy of any size they want at Kinkos and then have them laminated, when troubleshooting, one can trace the circuit out with a grease pencil and then erace the marks when the job is done. Having done the enlargement and laminating myself, I would recomend also copying the color key and/or the key for the devices and including it in the lamination on the back side of the drawing. Cheers - Dave
David DuBois

David,

My TD was originally sans flashers with a dash dip switch. I have fitted flashers as per the later cars. Just like yourself I copied the earlier wiring diagram to A3 size and then spent a pleasant hour with the drawing on the dining room table and spliced in the bits of required circuit from the later diagram. I then recopied the new drawing and got it laminated. I used the modified diagram to make up a loom myself which I got properly bound by Auto Electrical Supplies(inexpensive)Some of the commercial hybrid looms seem to have extra loops of wire in them.

You are spot on with the colour code chart. It's a pain to have to keep refering to a different page in the manual but after two weeks with your head stuck under the dash board you start to remember the colours. By the way they are standardised for all British cars

Jan T
J Targosz

I believe it would be more accurate to say that they are standardized for all LUCAS-wired cars. Sounds like the same thing, but Lucas also did a number of Italian cars too. It is a nice logical arrangement too, for which I am always grateful. Dave's system works pretty well for most wiring diagrams through the mid-60's or so. My 1972 Midget, on the other hand, has way too many wires to work well that way. I can't seem to figure out quite why, maybe Lucas was paid by the foot... it certainly doesn't seem to have enough additional functionality to justify the complexity.
David Lieb
David Lieb

David - That's where the grease pencil comes in handy. C
Cheers - Dave
David DuBois

This thread was discussed between 25/11/2004 and 06/12/2004

MG TD TF 1500 index

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