New computer need guidance already bricked one

[gtstorey]

That’s just a fuse, full time hot.

[Tody'shop]

That's just the name of the fuse in the OEM fuse box.

I was using that for referance its the relay to the right of that fuse in that section. I couldn't figure out how to circle it and put in here.

[gtstorey]

How about using the name of the relay? Or the number?

If you don’t know how a relay works, you are way in over your head. One side grounds through the ecm, closing the relay, sending power through the other side.

[Tody'shop]

VCMSuiteInfo for camaro wih 07 vette ecm.txt

Also before i take off the bench this is the infolog and it doesn't say anything about the vats or key so does that mean i don't have to do the patch?

[blindsquirrel]

I think most of your troubles you're having will boil down to modifying the harness to work as standalone when you didn't have the diagrams to figure out what goes where. How it works depends on which parts of the harness you kept intact and which parts you removed, and the electrical system of the car it's going into.

As stock, turning the key to RUN tells the BCM to turn on the RUN/CRANK relay, which puts +12v to ECM C1 #18/19 and wakes up the ECM, and the ECM then turns on the IGN 1 relay which powers up everything else. Without a BCM you'd just use a plain switched run/crank +12v to go to C1 #18/19/47 (C1 #20 is hot all the time, not switched).

[Tody'shop]

How about using the name of the relay? Or the number?

If you don’t know how a relay works, you are way in over your head. One side grounds through the ecm, closing the relay, sending power through the other side.

Powertrain ignition relay, I know how they work but i haven't seen the electromagnet part with an X in it only one that has this type of marking / and with the resistor there and with a diode to the left but never with a X in it. I seen them split and differant color and about 4 or 5 other ways but never with an X.

[Tody'shop]

I think most of your troubles you're having will boil down to modifying the harness to work as standalone when you didn't have the diagrams to figure out what goes where. How it works depends on which parts of the harness you kept intact and which parts you removed, and the electrical system of the car it's going into.

As stock, turning the key to RUN tells the BCM to turn on the RUN/CRANK relay, which puts +12v to ECM C1 #18/19 and wakes up the ECM, and the ECM then turns on the IGN 1 relay which powers up everything else. Without a BCM you'd just use a plain switched run/crank +12v to go to C1 #18/19/47 (C1 #20 is hot all the time, not switched).

Ok that helps i was thinking even without using the bcm i needed to have that relay running the switched on source while using the car switch from the camaro. I was going to use the vette pshbutton but it would have to go threw the cluster and bcm and didn't want that much headache.

[Tody'shop]

I think most of your troubles you're having will boil down to modifying the harness to work as standalone when you didn't have the diagrams to figure out what goes where. How it works depends on which parts of the harness you kept intact and which parts you removed, and the electrical system of the car it's going into.

As stock, turning the key to RUN tells the BCM to turn on the RUN/CRANK relay, which puts +12v to ECM C1 #18/19 and wakes up the ECM, and the ECM then turns on the IGN 1 relay which powers up everything else. Without a BCM you'd just use a plain switched run/crank +12v to go to C1 #18/19/47 (C1 #20 is hot all the time, not switched).

Also you are correct i had the service wiring harness info and thats it and everything on this thing went to a seperate bcm it seems like. It's been a pain but i just about got it i think. Thanks to all of you guys i realley appreciate it and when i finally get it going i will have all you to thank for it so thanks ahead of time.

[gtstorey]

GM changes their symbols every few years. I don’t know whether the changes as drawn has any real meaning. None of my service manuals have that particular relay so I can’t see if the symbols list say anything special about that symbol. Doesn’t change anything as far as what you need to know.

Maybe BlindSquirrel can weigh in on whether the way that is drawn in means anything different.

[edcmat-l1]

The X in the box is your electromagnetic coil.

[gtstorey]

Any ideas on why GM changed to/from a single slash that my 2010 service manuals (cobalt and Camaro) show? Or just one of those random “standards” change that corporations seem to love.

[edcmat-l1]

They've changed wiring diagrams symbols over the years. No idea why.

[blindsquirrel]

Spend 3 hours looking at 2009 diagrams, then jump over to a 2001 diagram and it looks like a cartoon until your eyes readjust.

[edcmat-l1]

Try going back to the 80s some of them look hand drawn LOL

[gtstorey]

10-4. All it needs is a head of department change sometimes. They want to make changes whether it makes a real difference or not.