I'm back... the 2 wires I soldered are doing fine. The other 2 are not. I guess They were broke under the insulation because they are broke all the way through now. My problem is that one of them broke even with the plug, so there is no fixing it this time. I called the cat dealer and they said I had to buy the whole harness. This doesn't seem right and I can't find the part number to check. When I look up MAF connector, I get thousands of extensions for every vehicle imaginable, but I can't find one for forklift. Any help would be greatly appreciated. The whole harness is about $1000 plus having to change everything out. I would much rather just change what is broken.