Have a 81 camaro that someone took a v6 to a 350- it was also was a auto. now a 4 speed the wireing is all jacked up under the dash i need to know which wires are to the ignition, lights and so on. and also which i can just do away with

Sounds like the blower resistor. You can do an internet search for a photo. The switch is the object you turn for fan speed.

check fuse box in engine compartment along the firewall. you might have fried your main relay, this is usually connected to the firewall for grounding purposes. you can find this by following your main starter wire from the starter also your under dash fuse box connects to this

hot wire starter you can short out ignition switch and wiring. to jump starter ignition switch start postion.you have to run 10 gauge jumper wire from the starter solenoid positive battery terminal to starter switch or S terminal on starter solenoid this procedure take two people but better remove starter replace starter solenoid. trying jumping off starter on camaro would be dangerous you have jack up car to get to starter and wiring person laying under car hot wiring starter while other person hold ignition start position put person under car in deadly position just remove starter have auto parts check it out first replace starter or solenoid if either bad. easier hot wire starter if starter under hood like my 1977 vega monza had starter at top could take long screw driver jump starter off.on the four cylinders engines back in the 70s. camaro starter under car dangerous trying to hot wire not a good idea.

The blower motor speed resistor has gone bad, you can pick one up at most Auto Parts store like Auto Zone or your local GM dealer. The resistor is located by your blower motor under the dash behind your glove box.
Auto Zone and the dealer can give you the instructions to getting the job done and best to replace the wire harness also.
Thank you for using Fixya and be safe

You probably put a hole in your oil pan. It has to be removed, cleaned, and patch the hole. Make sure you have a fresh gasket and silicone when you replace the pan. Your local auto parts store can give you some tips for the job.

Here, review the GM Radio Wire & Color Code Information (page 7) and the GM Harnesses Wire Information

I really hope help you with this. Good luck (remember rated this help).

I believe it is electrical, and someone,
1.Has tried to bypass the use of the correct ignition key,
2.Or a fusible link for the starter is blown.

Does the ignition key have a chip on the side of it? The 1990 Camaro uses an ignition key with a resistor on the side of it. (Chip)

I had a guy install a radio, cut many wires, then wired it up wrong.
I found fusible links in the engine compartment that were blown, and wires that weren't hooked up correctly.
Took a couple of days, plus the wiring schematic for the engine compartment, and interior, to figure out what he had done!

My suggestion would be to find out if the ignition key fits THAT car first. (Dealer info)
Find out if it's the correct steering column.
Then look under the engine compartment to check out the starter wiring. You'll need 1990 Camaro wiring diagrams.

The prior owner bypassed the ignition switch with that push button momentary switch, because either/or a fusible link has melted through, or it is the wrong ignition key. (And maybe a different steering column complete with key switch!)

The 'Chip' on the key is a resistor, and THE correct resistance is needed to bypass the theft deterrent system.

there will be a tab onthe connector you lift and then seperate sometimes you need a flat head screw driver to lift the tab

Turn -Front seating area, driver side, under dash, mounted on passenger side of steering column

4 way-Front seating area, driver side, under dash, above kick panel, mounted in top of convenience panel

you can get an "engin swap wiring harness" from jegs or summitt that would require a little extra work on the wiring on the inside of the vehicle, however if you have the original wiring harness for the 90 engine, there is a plug on the inside of the right(pass) fender of the camaro that connects the internal wiring to the external. (plus the fuse block connector under the hood on the firewall on the driver's side) as far as the trans. i did the same thing with mine and kept the 5 sp, the only real problem is that i don't have back up lights.