Trying to find a PCIII for my 05, so I go to eBay. I found 2 different ones that are selling. The plugs on both are not the same. Why is that? The first pic shows the PCIII with off-white connectors that are round and I remember connecting my old PCIIIr but the second pic shows a PCIII with black connectors and they are square. Is there a difference or maybe the the black connectors plug up somewhere other than under the tank? The seller of the first pic says its for a 2005 & the seller of the second pic says that its for a 2002-2007.Thank ahead of time guys.