21-04-2021, 08:30 PM
Now there is a working dynamo on the Ruby again, I have refitted the flashing festoon LED indicators. These flashing LEDs are designed to be mounted directly into the trafficators but I have put them in conventional amber lamps front and back that are wired directly into the trafficator circuit at the junction box under the bonnet. This means that they work from the original switch. They seem bright enough for general use but are not highly visible in full sunlight - something of which to be aware if thinking of using this arrangement in sunnier places than the north of England. Brighter options have been mentioned by others above.
Despite fitting earth wires, the LEDs did not flash correctly with the brake lights on utilising battery power alone because of the significant current taken by the filament bulbs. This must be reducing the voltage in the trafficator circuit to about 5 volts - at this voltage the LEDs stop flashing and just glow faintly. This has been cured by disconnecting and removing the trafficators from the car which reduces the total current being drawn. The LEDs now flash as they should even when the brakes are applied, with or without help from the dynamo.
I can tell the difference when driving around - other drivers are seeing the indicators and reacting accordingly. It is a shame to lose the trafficators, but the LED modification is easily reversible, and driving in town now feels more relaxed.
Despite fitting earth wires, the LEDs did not flash correctly with the brake lights on utilising battery power alone because of the significant current taken by the filament bulbs. This must be reducing the voltage in the trafficator circuit to about 5 volts - at this voltage the LEDs stop flashing and just glow faintly. This has been cured by disconnecting and removing the trafficators from the car which reduces the total current being drawn. The LEDs now flash as they should even when the brakes are applied, with or without help from the dynamo.
I can tell the difference when driving around - other drivers are seeing the indicators and reacting accordingly. It is a shame to lose the trafficators, but the LED modification is easily reversible, and driving in town now feels more relaxed.