OK here's the story.
I bought a 96 blazer that needed head gaskets, just finished putting everything back together, charged the battery over night, changed the oil, filled the coolant, put the battery back in and .................................................. .................................................. .

NO POWER
TO ANYTHING

checked all the connections, the terminals, the grounds, the battery is good at about 14.5 volts............................................. ..............

ANY ideas?

 

check the power conections at the alternator and the fuseable links in the power leads to the cabin

 

where are the fuseable links?

 

the positive post on the alt on my 97 has one lead that comes off the battery and two leads that runs to the cabin the fuseable links are in those two cabin lines

 

Thanks to everybody that posted.
I started tracking down wires and I pulled a bonehead move, I forgot to re-attach the wire from the battery too the alternator.
Hooked that back up and power is back up.
Although I think I fried the coil and the ECM, so those are and order than I should be on the road.
Thanks again everybody