I have a 2003 Ram 2500 with a 5.7 Hemi engine. Had both oxygen sensors and a catalytic converter replaced and found that the service technician broke one of the wires on the truck side of the pigtail for the Upstream catalytic converter. I finally tracked down and OEM pigtail but it comes disassembled. I have attached the photograph. Has anybody ever assembled one of these, got to admit it got me stumped. Would appreciate any assistance and be super awesome if there was a video somewhere, but I have not been able to find anything.