Interior lights pulsing as ideling

[totalpackage]

Guys,
I noticed and maybe you do as well that the interior lights pulse(flash) as the Tahoe idles. I never payed attention to this because it was not very noticeable until i replaced the interior lights with LED's. Now its more noticeable and bugging me. Could this be an alternator issue? or is there a way to stabelize it?

 

[SunlitComet]

do they stay on or off with just battery power and no engine running?

 

[totalpackage]

As the engine is running it does it. You can tell the lights are dancing with the idle. Again, some people may not even notice it but its noticable to me.

 

[SunlitComet]

can you get your battery and alt load tested?

 

[totalpackage]

I installed battery in November. Alternator im sure is 10 years old. Maybe i can figure a way to check it.

 

[SunlitComet]

most parts stores will load test it for free. if the pulsing is like the brightness waving up and down then i would suspect some bad diodes in the alt.