Dashboard Lights

[Hamish Coutts]

Morning all,

I'm currently doing a bit of Spring cleaning on my late +2.

I thought I would clean the interior lights of the instruments in the dash as they have always been a bit dim at night particularly the fuel gauge speedo and rev counter.
The speedo's not inportant but I want to see the other gauges better at night.

When I took out the lamps they looked original and were spotlessly clean so it wasn't the usual buildup of dust that was causing the lack of light problem. The lamps all test ok.
The earth also looks OK and the battery & charging circuit are fine. The volt meter is normal when the engine is running.

That leaves voltage and lamp wattage.

1. Does anyone know what the voltage should be at the lamp socket. Is there some kind of voltage regulator in the circuit that I have missed?
2. What wattage should the instrument lamps be?

Bit of a puzzle this one.

Any thoughts you have much appreciated.

Hamish.
:angry: