Replaced Dash Harness and now no start

[HeloCrewChief]

I decided to replace my under dash harness since the fuse block was so corroded none of the fuses were even fully held in. I purchased an M&H unit and the install was pretty straight forward. Even with the corroded fuse block I was stilla ble to start the truck every time and the headlights, dome light, horn, and taillights worked. No dash lights worked.

After replacement, the truck does not start. Almost like a dead battery or bad starter. The only light I get anywhere is the brake light in the instrument cluster which did not previously work. Being optimistic about it at least something now works

Anyway, I've tried jiggling the ignition harness around and that did nothing. The truck is a manual transmission so, I do not think neutral safety switch is an issue. I'm thinking about pulling the fuse block back off and trying to reconnect it with the engine harness again to see if that helps.