No power inside cab?

I went through and removed 90% of the engine wires preparing to put my 5.3/4L60E into my 94 GMC 1500, and this weekend I was wiring up the 5.3/4L60E harness and I have no power inside the cab?

Im guessing I deleted the main feed wire for the cab when I was deleting the un-needed OBS wires. I ran a temporary wire from the battery to the distribution panel on the firewall, and that gave me power inside the cab, but no power to the blower motor.

I ran a keyed wire to the 5.3 harness for key on power, and when that wire has power, I can remove the wire i ran to the firewall and I will still have power inside the truck, but then I cannot spin the starter.

Also, sometimes I can key off and take the key out and there will be no power inside the cab, but other times I can key off and remove the key and there is still power inside the cab, I have to remove the wire I ran to the firewall to get the power in the cab to turn off.

I cannot remember, was there a wire that ran to the alternator to inside the cab on the OBS engine? It was originally a 5.0L/4L60E. If it cant be figured out, can I run a wire to the in cab fuse box to remedy the problem?

originally there was a wire from the starter main cable, lug bolted onto the starter, going up the backside of the engine through a metal tube and then up to the fuse block on the firewall.

i think i found it last night. I was looking through my leftover parts and came across the original battery cable, which had the starter main feed, the alternator wire and 1 other that I believe went to the firewall. I hooked it all up and still nothing changed.

Im gonna check it out again tonight and see if I can figure anything out.

Any idea on the blower motor?

blower motor pulls power from the bus bar. Make sure you don't have it disconnected behind the glove box.

bus bar? I will double check that it isnt disconnected behind the glovebox.

It will be a connector with one large red wire and two smaller wires. Sometimes the connectors fry on the red wire and you have to replace with new connectors or just put a butt connector on the two ends.

I will check it out. Its just wierd, it worked before I started removing wires and now it doesnt. I can hear it click if I go through the fan speeds, but nothin happens.

Figured out the blower motor problem, you were right, there was 1 wire that came unhooked, hooked it back up and now the blower works.

Still fighting a backfeeding/key off issue though. Somewhere, somehow I am backfeeding power. I turn the starter over with the key, but if I key off, it doesnt kill power to the fusebox, and I still have power inside the cab. When I remove the battery cable, then put it back on, power is off in the cab until I key on again. Any ideas?

In the NBS trucks, the power was fed to the radio, interior lights, etc until a door was opened or a set time was met. There apparently is a trigger wire on the door that lets the light come one when the door opens. This wire might have something to do with it, but not sure. :-/