After using our alternative
regulator with integrated smoothing condenser and suppressor diodes from
Kellermann the problem was no longer observed.
Unfortunately this customer has so far not been able/willing to supply us
with some more detailed information on his setup.
We have not been able to reproduce a situation where our standard
regulator delivers voltage high enough to destroy the LED, even without
The solution with the regulator with integrated condenser is difficult to
understand, as the battery has a much bigger capacity than the condenser
inside the regulator.
We therefore assume, that:
- either there was bad wiring leading to intermitened disconnection of
the battery during engine run which could result in voltage bursts -
which surely would be smoothened by the alternative regulator.
- or the customer had assembled a wire from the LED arrangement directly
next to and in parallel to the high tension cable leading to the spark
plug. On the ETZ a probable
NEVER ever lead ANY impulse wire directly in parallel to the
ignition cable (HT cable)