I have noticed the flicker in my 04 baja turbo since I got it in 06.
I notice it mostly while decelerating/ slowing down with the engine speed dropping down to around 1200-1000RPM.
I am thinking that it is the voltage regulator.
Maybe when the alt voltage output drops with lower RPM's and it switches to battery is when the flicker happens.
Has anyone replaced their alt and noticed that the flicker has gone away?
Mine is not dependent on the A/C clutch switching on/off at all.