Harleyjim83

I did a 4.8 swap in a 02 Silverado that had a 4.3 5spd. motors is in and im not getting power to trigger wire because my 4.8 wire harness is for 03 auto so my question is how to bypass neutral safety switch on harness so I can start truck with key and wire speed sensor still have 4.3 harness as well help please