I purchased body wiring harness 25896162 via a GM dealer for this project. My plan is to use C 6 GM wire harnesses. This harness seems correct except for the driver & pass window connectors. The green connectors as on a 2008 Corvette are absent & in place are 5 wire female connectors on both driver & pass sides. [Pics are attached]. Does anyone know if these are for power doors or windows or for another purpose? These connectors are similar to but not identical to the diagram in my GM service manual [2008 Y car] Vol 2, page 11-326 top left. Where does the primary fuel level sensor wire enter the wire harness? Is it via the trans harness to the engine harness? If so then I should find it at the connector on page 11-343 of engine to I/P harness but I do not see it. Who knows an easy way to connect my compatible fuel level sensor wire to the wire harness so the info gets to the Corvette instrument cluster? Does the oil pressure, water temp, voltage, & fuel level info get to the instrument cluster via then high speed GM serial data buses? If not how does that info get to the instrument cluster? Any & all encouraging & pejorative comments are welcome.