Ls swap electrical issue

[dalinwilkinson]

So I’m currently swapping a 5.3 ls into my 85 k20 using the terminator x
After I pulled the small block me and a buddy tidied up the engine bay wiring but I’m worried I messed something up or my buddy cut soenthing out he shouldn’t have
Motor is in and everything is fine but when we hooked the battery up fuse box didn’t have power so we figured out where it was tied and gave it power but now it seems the lower half of my fuse box is still lacking power is there anyone with just better electrical knowledge on these trucks that could just point me in the right direction please

 

[hoagster]

Go here and find what you guy's cutout! You only need 4 wires to connect and start the ls motor. But if you removed critical wiring for the truck you need to figure that out first.
Good luck. You might want to say hi to the group first! Welcome from Norcal

https://www.gmsquarebody.com/threads/1973-1991-wiring-manuals.14498/

 

[Ricko1966]

Yep.

 

[Jgonick]

The attachment shows where the fuse box gets power from.

also like mentioned by @hoagster use the wiring diagrams found at https://www.gmsquarebody.com/threads/1973-1991-wiring-manuals.14498/

 

[dalinwilkinson]

I appreciate you guys taking the time to reply when I find time again I’ll try to trace what I can but I appreciate it

 

[dalinwilkinson]

Problem is solved and the ls just started for the first time gotta get it put back together and then we are golden thanks again for the help

 

[Camar068]

Problem is solved and the ls just started for the first time gotta get it put back together and then we are golden thanks again for the help

so what was it?

 

[dalinwilkinson]

so what was it?

A always hot was just butt spliced and stuck in a loom somewhere so I found it and gave it power and then pulled my key on and cranking form the same loom and it’s all sorted just my buddy who was tidying the wiring just lost a few wires is all

 

[Camar068]

A always hot was just butt spliced and stuck in a loom somewhere so I found it and gave it power and then pulled my key on and cranking form the same loom and it’s all sorted just my buddy who was tidying the wiring just lost a few wires is all

cool glad you found it