2005 350 Rancher 2wd wont start off the button

I bought a 2005 Rancher back in 2005 at the dealer. Never really rode it very much and then i bought a Teryx and sorta just left it out in the weather. Big mistake. well ive had to redo just about everything on it and I now have it about 90% back to original except it will not start off the button. The switch is new, the key switch is new, new battery, new solenoid. So if you cross over the solenoid over with a screw driver it will start up and I actually took my first ride on it this evening 6-2-16. the atv will shut off by using the key switch or the on/off switch. does anyone have a clue what is wrong? Do i have a broke wire? loose connection. My fuse box looks very shotty and rough. could that be the problem?