Alt. light flickering at high rpm???

crazy 340 said
you know what it aint fix

the other day was driving at day light everything was going find
amp meter was in the middle and steady
stop for diner left the restaurant when it dark outside so turn the lights on
the moment the engine get close to 2600 rpm the light began to flick again

today when for the last ride of the season
ounce again amp meter steady
stop at the car wash
and came back home

the engine was running find
got the car in the garage
got the engine at higher rpm look at the tach light and was steady
turn the lights on every thing began to flicks again

didnt have much time
so grab the multimeter and and it show 14.9 to 15.3

why is it charging so much
why does flick the light like that

Sounds like you have tried electrical solutions and those do not work. Perhaps the problem is mechanical, slipping belt, bent pulley, or loose pulley on alternator. How can that make lights flicker? They can flicker when there is an interaction by the regulator. Here is what can happen, this is the type of slip that may happen 1/2 way around a pulley. The slip drops the alternator output voltage, the regulator adjusts for more, by that time the slip stops, and the voltage is too high, the regulator adjusts, but by then the slip happens, so the result is lower ..... the regulator is out of sync.