Here we have the wiring harness that goes around the engine and down to the transmission removed from a 2006 2500HD Duramax truck with the 6.6 Lbz engine, allison transmisison and MANUAL SHIFT t-case. Excellent condition, with no apparent damage. This is NOT the harness that sits right on top of the engine. This will only fit the 06-07 LBZ engines. Please view photos carefully, Make sure this will work for your application BEFORE purchasing.