AO Silver Member
Join Date: Mar 2003
Re: Selespeed Flashers
Dimming of the lights (with any car) because of any change in electrical load and/or change of engine speed is probably an indication of a battery that is not holding enough change. Either the battery is getting towards the end of it's life or the battery was under-spec'd in the first place.
The load on the battery is too high for the current draw so the electrical system is mainly running off the the alternator (rather than the alternator just charging the battery).
Although effectiveness of the grounding / earth straps could be looked at, the standard setup designed by Alfa should be sufficient providing everything is ok.
Any dimming of the bulbs will not shorten their life at all. They can easily handle the voltages in question and the change in voltage that produces the dimming effect.
(All of this is just a personal opinion because I'm no expert on charging/battery/alternator systems. I only know this from the effects on other electrical components - wipers and window regulators as they would normally operate)
'A business absolutely devoted to service will have only one worry about profits. They will be embarrassingly large.' - Henry Ford.