Is there a way to connect an electric guitar to Dj equipment?

I'm thinking of a sort of instrumental-to-mic-in converter

The equipment has a 10000watt amp and i wanna say 3000+ amp speakers.
There's a power supply and about 1/2 of a mixer. which does have a
microphone input.

There isn't a laptop or turntable i can use but there is a graphic
equalizer.