I have a 2000 Silverado reg cab short bed that originally had a v6. I put a 2003 5.3 in it along with the 2003 harness from another truck. Everything plugged together including the FBW harness tach signal box and pedal. I am using the 2000 fuse block also. When attempting to put everything together the two plugs under the fuse block one of them does not plug into the plug on the truck. the one that does not plug together is wrapped in pink colored tape. Can some one please help me identify this plug and tell me which wires need to be spliced togeher. The original plug on the truck goes into the main harness for the body and dash. The other end goes into the ECU and is about 8in long.
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