In article ,
wrote:
On Thursday, 17 November 2016 18:28:43 UTC, charles wrote:
In article ,
whisky-dave wrote:
On Thursday, 17 November 2016 15:24:55 UTC, Dave Plowman (News)
wrote:

Asking here in the hope someone has come across this and may have
an answer.

Car interior lights have an auto 'dimmer'. They do a graceful fade
in and fade out when switched on and off. On a Merc. Owner wanted
some slightly brighter lights so changed from tungsten to LED. The
auto system still does a graceful fade out - but sort of leaps to
on, rather than fading up. Later Mercs have got LED lighting which
does fade in and out OK - but it's not just a case of changing the
module which on the later cars is part of other things too.

On this model the module is stand alone, so would be possible to
modify it.


Why don't you replace the traic ;-)

'cos car electrics are dc

Except for Ford model T.

not very relevant in the contexct of a Merc's interior lights.

--
from KT24 in Surrey, England