93 mx470 electrical issues

I just picked up a 93 mx470 with 583 motor. I am new to sleds and i am trying to fix this one up a bit. i cleaned the carbs gaped the plugs fixed the fuel lines and i can get it to start but it has a high idle - I believe this is just an idle screw adjustment issue. The bigger problem is that none of the electronics work, no gauges , no headlight nothing.... the sled came with no battery so i hooked up up to my quad battery but i cant get anything to turn on. My question is where do i start trouble shooting ? it looks like there is a single fuse holder off the + wire going from the battery to the ignition but there is no fuse in place. I temporarily installed an 18 gauge wire to bypass this block just for testing purposes because i didn't have any fuses on hand but i still cant get anything to turn on. All of the plugs look to be connected and i don't see any damage to the harness . I am very competent with wiring as i own a security/av company and i hook up complex electronics quite often , but i am new to sleds so i'm not sure exactly where to start
my trouble shooting. any help would be greatly appreciated.

93 mx470 electrical issues