19-02-2019, 07:50 PM
(This post was last modified: 19-02-2019, 08:42 PM by Bob Culver.)
It is a common problem but need far more info for a sensible answer. What does the ammeter do? Is the light constant brightness? What bulb is used? Seems like a basic wiring error. John Cornforths circuit diagram on Dorset site will likely assist you to fathom both wiring and the workings.
There are also datailed description sof the dynamo and cutout operation available on Club sites.
The lamp is wired between the battery(thru ign sw) and the dynamo output and responds to the difference in volts. As the dyn output rises the lamp dims and when the cutout closes the batt and dyn are conncectd directly so the lamp goes out. If it is wired direct to earth it simply comes on with the ignition.
There are also datailed description sof the dynamo and cutout operation available on Club sites.
The lamp is wired between the battery(thru ign sw) and the dynamo output and responds to the difference in volts. As the dyn output rises the lamp dims and when the cutout closes the batt and dyn are conncectd directly so the lamp goes out. If it is wired direct to earth it simply comes on with the ignition.