 
Welcome to our Site for MG, Triumph and Austin-Healey Car Information.
MG MGA - Dynamo
| Restoring my dynamo. Checked field coil resistance disassembled - 6.0 ohms, OK. Rechecked it assembled - 3.0 ohms ! What has gone wrong, if anything? | 
| Art Pearse | 
| Shorted to ground on the wire running between the field windings? | 
| Barney Gaylord | 
| Probably insulation on field coil wires is bad and contacting case and shorting out part of the coil when assembled. | 
| Jeff Schultz | 
| OK!!  Shorting out between the long clamping bolt and the wire between the 2 coils. Need some insulating tape! Thanks | 
| Art Pearse | 
| Now fixed. When I test run the motor, the dynamo will be turning, but not connected to control box etc. Is this liable to damage it? | 
| Art Pearse | 
| Dynamo will not be damaged if it is disconnected from the wiring harness. | 
| Barney Gaylord | 
This thread was discussed between 15/06/2009 and 17/06/2009
MG MGA index
This thread is from the archives. Join the live MG MGA BBS now