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Leew
10-28-2016, 11:26 AM
I'm pretty sure this control box is wired incorrectly. Forgive the wiring colours as they are not standard but it appears the white wire is going to the field on the dynamo and the red to the D side of the dynamo which when they get to the control box are transposed
The contacts on the left hand side of the control box appear to have fused together....does this make sense that if the field and D are transposed it would fuse the contacts together?
I am assuming the small terminal on the dynamo is field on a postive ground car?455204551945518

RestoreThemAll
10-28-2016, 11:50 AM
Do you have the wiring diagram? I think that this is the one for your car.

Duane_Rhynard
10-28-2016, 11:53 AM
Leew,

Below is the wiring diagram you need for your 100-6 positive ground car.

Duane
58 BN6



45522

steveg
10-28-2016, 03:42 PM
Do you have the wiring diagram? I think that this is the one for your car.

Dale - this is a BJ8 wiring diagram - note the 2 turn lights :)

steveg
10-28-2016, 04:00 PM
Correct factory wiring diagram for 100-6:

45530

Leew
10-28-2016, 05:51 PM
....but which is the field (F) connection and the (D) on the dynamo?

steveg
10-28-2016, 06:09 PM
....but which is the field (F) connection and the (D) on the dynamo?

You can look at the key for color listings. F is the small yellow with green stripe; D is the large yellow.

steveg
10-28-2016, 06:16 PM
Are all the wiring colors incorrect? Do you have the wrong wiring harness for your car? If so maybe you should buy the correct harness.

Don't know if the color wiring diagrams are available in the UK. Tom's Toys has them in the US:
https://www.tomsimport.com/new/parts/parts.asp?sect=32&new=1#ah57

Leew
10-28-2016, 06:19 PM
The wiring loom is home made, that's not the problem. The distance and route from the dynamo is no distance so I can tell which is which. Wiring looms on the cars are very basic, all I need to know is in photo 3 that I have posted, which terminal is field and which is dynamo

steveg
10-28-2016, 06:45 PM
45535
Your small white wire is Field and your large red wire is Dynamo. F and D above.

CraigC
10-28-2016, 10:28 PM
....but which is the field (F) connection and the (D) on the dynamo?
The small stud is "F" or "field". The large stud is "D" or "dynamo". It is also generically referred to as the "output" terminal.
As you should be able to tell, the "D" terminal is the one closest to the center of the generator.

Leew
10-31-2016, 12:59 PM
All ongoing issues now resolved.....after finding the control box was wired incorrectly with the F and D transposed I decided to replace it. I then decided before I connected the wiring fron the dynamo ( generator for my US friends ) to check to see if the dynamo was working. Ran a jumper lead across the F and D terminals, positive to ground on my voltmeter then black to jumper....nothing.
Put power into the jumper, sparking like a good un
Now I knew there was a bigger problem than a transposed wire on the control box.
Whipped the dynamo off the car and even before it was off I could see the coil windings were all unravelled inside the dynamo...it was absolute toast
How it ever got that bad I'll never know. The guy in the dynamo shop said he had never seen one that bad
Maybe having those wires transposed on the regulator could have caused that amount of damage
Installed an exchange Lucas C45 today, charging beautifully on rewired control box
Thanks for all the help everyone
Lee W

blueskies
10-31-2016, 02:15 PM
Leew, You must be in Surrey, UK, not Surrey, Canada. You are lucky when it comes to finding parts and service for Healeys in a timely manner. In western Canada, many/most parts suppliers and repair shops have no idea what a dynamo is or have any Lucas parts available. Most also have never heard of an Austin Healey.

Leew
11-01-2016, 04:18 AM
Leew, You must be in Surrey, UK, not Surrey, Canada. You are lucky when it comes to finding parts and service for Healeys in a timely manner. In western Canada, many/most parts suppliers and repair shops have no idea what a dynamo is or have any Lucas parts available. Most also have never heard of an Austin Healey.
Yep, good old Surrey in the UK
Very fortunate to be able to drive just a few miles to source all the bits I need, especially to pick up the dynamo at a good price locally and fix everything once diagnosed in the same day