I recently acquired a 2006 Suzuki lt-a700x king quad 4wd and the 4wd does not engage. Nothing happens when I push the button not even a relay click. I had all four tires off the ground, both rear turn but the front does nothing. The front drive shaft spins, both front tires spin independently. A friend and I trying to chase down wires and check relays now but these relays are to expensive to replace without knowing if there are working or not. Any advice would be greatly appreciated.