So I have a 2004 Ranger 500 6x6 with a carb and do not have any power to the fuel pump. Research has suggested that it could be the pdm but after looking extensively through my machine I cannot find a pdm. I can only find 3 flat black thin boxes under the hood on the passenger side. Are there some ranger 500's without pdm's? I bought this machine new and it has never been messed with.