Neil,
     You have a bad ground and or grounds in various places. This is a=20
common problem.
Thanks,
rich!

On 2/16/2015 11:58 PM, Neil wrote:
> Recently got and old car roadworthy and it has HID headlights in it.
> The bulbs have an interesting behaviour in that when first turned on,
> they emit a quick flash of light, then instantly dim, and slowly
> brighten back up to operating brightness.  What's not good is that every
> so often, that initial flash causes enough of a power surge to knock out
> the ECU (
> http://www.wmsracing.com/wmsweb/SDS-WMS-SDS-Digital-Injection-System.html=
 ).
> Or perhaps it's knocking out the aftermarket ignition system (
> http://www.jegs.com/i/MSD/121/62152/10002/-1 ), as after the surge, the
> ECU shows "RPM error".  I'm planning on adding some type of filter to
> the ECU or ignition module power lines (no prob with that), but
> wondering why I shouldn't try to reduce the surge instead.
>
> How would I go about doing this?  The HID lights have the bulbs, a relay
> module and a couple ballasts.  Would there be a simple way to reduce the
> surge for bulbs like this?  Or would doing so impede the bulbs operation?
>
> Cheers,
> -Neil
>
>

--=20
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