I have a 2003 raptor 660, and I'm having an issue with power.

I can turn the key on and no dash lights will turn on and it won't turn over.
The solenoid won't click or anything.

I can get it to fire by pressing on a fuse on the solenoid relay. It starts right up.

Any ideas?

 

That is your problem, a bad connection on the fuse. That one is the main fuse for everything except the solenoid, so nothing gets power if it blows. You can take the contacts apart and clean it up, or fit a new solenoid, check that you connect the M terminal to the motor lead and B to the battery lead.