2000 S10 Heater Core Install...

Finally got tired of the smell of the leaking heater core and knowing the labor involved it went pretty smooth. I took my time (roughly 3 hours) with no help! Went by Hanes' manual which was somewhat helpful but left out lots of detail.... Took out the whole dash, dropped the steering column, flushed out the whole system and all. Finally getting it all back to perfect place not one screw or bolt left.:rofl: Yesss! Felt pretty confident that I was doing everything the way instructed right until I reconnected the battery and refilled it with coolant.

Come to find out none of my heater or ac controls work, no power at all to the radio, gas gauge doesn't work and power windows don't anymore...?:banghead:
The gas gauge not working is weird cause all others work?

Checked all the fuses-Good
Checked all the vacuum hoses for heat controls-Good
Checked the only harness that i disconnected-Good

Not really good with electrical diagrams and all so any suggestions where else to start troubleshooting would be greatly appreciated!

Make sure you replaced all the grounds..