I recently bought an ‘89 iroc for a fun project car that I could throw my supercharged 350 into. I’m running into an issue with trying the cleanly wire power for the whole fuse block, I don’t know if I can power the “essentials” (lights, power seat, windows, radio) with just one or two wires. The second issue I’m running into is where to grab ignition power for the s side of the starter from.
anything will help. Thank you

I can provide pictures if needed

 

Not sure if you have looked at the schematic for your car. The fusible links off the starter power the fuse box.

 

The S terminal (Solenoid) on the starter doesn't get ignition power. It only gets power when the key is turned to Start. Therefore you power it from the Solenoid wire, which is purple.

Doesn't matter what engine you "throw" into it.

Sounds like you've never installed an engine before, let alone "thrown" one, and have a bit of learning to do where wiring is concerned. I suggest starting with the FSM for your car.

 

I’m used to building stock pro cars, so you’re right I’m not necessarily used to “throwing” engines in. Im used to starting from scratch, and looking at the schematics haven’t helped because there’s no purple wire to be found in the engine bay, and even with a test light I couldn’t find a port on the black linkage box in the engine bay that has power or a “signal” when the key is on start.

 

what is a linkage box ?

 

Sorry, that’s what the control module is called for my other cars so I just used that terminology. The black box on the drivers side of the car in the engine bay, it has outputs for plug prongs to insert into them. However my car is missing the bigger of the two plugs so these outputs aren’t connected to anything. Apologies for not being very clear in my original message.

 

You can wire the whole car off c100, might just buy a fsm or search the forum. Do you have a specific question?

 

Look in the harness that goes from C100 across the top of the bell housing and down to the starter.

Then, get yourself the FSM for your car. Amazingly useful tool. It could be argued, the most useful tool you'll ever own; more valuable than a socket set or air gun or floor jack even.