Question on power for a few minutes then none

I've been working on the Duster and made some head way. Found the head light switch and dimmer switch ( both rusted up ) were bad and replaced those.But I'm in need of a cluster like the one pictured. This one is in very poor shape, corroded terminals , Rusted up ammeter gauge. Sorry about the pictures on the lift. I'll get a few of it when I get it on tires. So if anyone has a cluster let me know.---Thanks