TPI onto 86 Block

[VileZambonie]

Also you can see cavity C has a pigtail hanging off of it at the fuel pump relay. That's your test lead

[123 pugsy]

Thanks guys. That drawing looks like how the wires were hooked up. The drawing I drew was a copy of the Haines manuel drawing. So it looks like the red wire (test lead) goes to the G pin of the ALDL?

[VileZambonie]

No. You should have only 3 pins used in your DLC. The fuel pump test terminal is just a connector that hangs out next to the FP relay. It's there for diagnostic purposes and should hook up to nothing unless you are trouble shooting your fuel system.

[123 pugsy]

Got it.
Now we're moving along nicely. Thanks.

[123 pugsy]

I got the computer/engine wiring harness done.

Thanks, Vile.

[123 pugsy]

I have only one grey mystery wire that goes to PIN D on the connectors from the ALDL/fuse box harness to the computer.There are two connectors marked A thru R. Once I know this ,I can install the internal wiring to the fuse box and dash lites.
Is the voltage to the SES lite coming out at 12 volts?
I need to get a bulb for this and am not sure or maybe use the FASTEN SEAT BELTS light.

[anesthes]

Good job!

I'm doing an EFI swap on my '84, but i'm using TBI. The truck was CC carb, so with a little splicing it should work. Only problem I may run into is getting a VSS signal to the ECM. I need to verify the dash has  VSS output like the '87 dash does, but I imagine it did for the ECM to control converter lockup.

What are you using for a transmission in yours?

I didn't see anything mentioning it, but if your using a '92 1227730 ECM you might have a vats problem on your hand, and you might need to disable a few things in the chip to get things to work properly. When you get to that point drop me a line if you need a hand. If you send me a blank chip I can burn you a program with vats disabled, egr, 02 injection, and a tinker with timing if you need it.

I have an '87 vette as well, that I have repinned the harness to run a 1227730 ECM. It's a 480/500ish HP naturally aspirated 358.
If you ever wanna bounce ideas back and forth let me know.

-- Joe

Moderator @ www.thirdgen.org

[123 pugsy]

I'm running a th350 tranny. I ordered a VSS from Stealth Conversions Part #4PAC. I screws into the speedo cable outlet in the tranny and the speedo cable screws into it.
I've already made up resistors within 5% of the "chip" in the key and wired them in.
As for EGR ,I will be running it as I've read something about it keeping combustion chamber temps down and helping with the timing/detonation.Can't remember exactly but I read its good to use the EGR.
I'll get it running and see how it goes.

[Captkaos]

What ECM are you using?  Port D on the ALDL is typically the SES Ground.

You can get all the pinouts for ECM's here:
http://www.diy-efi.org/gmecm/ecm_info/

you can swipe the plastic lens out of a SES equipped Speedo and use it in yours in lieu of something else and run a lead/plug straight to it if you want it to look factory.

[VileZambonie]

You have a grey wire in pin D of the DLC?

It's hard to read because it got shrunk

[123 pugsy]

What ECM are you using?  Port D on the ALDL is typically the SES Ground.

You can get all the pinouts for ECM's here:
http://www.diy-efi.org/gmecm/ecm_info/

you can swipe the plastic lens out of a SES equipped Speedo and use it in yours in lieu of something else and run a lead/plug straight to it if you want it to look factory.

I'm using the 7730. Its not the ALDL I'm talking about. You guys are dealing with a guy who's electronic skill in cars is knowing what a fusebox is. I'm learning for the first time about fuel injection now so I don't know what connector is called what.
Easy way is to snap a picture. These 2 plug into the wire harness that comes out beside the computer.They don't plug directly into the computer.







I don't care about the stock look of the SES light. I just need any light available to me on the dash to light up in case of a problem. So I am assuming any 12 volt bulb will work?

[VileZambonie]

so what do they plug into? If they aren't used then you don't need to worry about it.

[123 pugsy]

The 2 black connectors go into the white connectors. I have 1 grey wire that comes across toward the fuse box is all that I don't know what its for......I'll find out later I guess. I left it just hanging loose and taped up as I wired the interior harness up to the fuse box tonight.

I had this small fuse box for the Firebird headlamp doors that I converted. My main fusebox is from an 87 pickup and it had the ECM and CRNK fuse already.






So now I have wiring from 76,87 pickups and 92 Firebird all spliced together. A real mixed bag. Feel sorry for anyone who buys it in the future.

[VileZambonie]

Well there's lotsa grey wires and schematics aren't listed by where they're routed so you'll have to trace where the other end goes in order to follow it on a schematic.

[77c15]

If it's any consolation, I had to repin a 92 z28 motors wiring harness to match my brothers 88 IROC body....that took a month! Anywho...the posted pictures are the c207 connectors. They control a TON of stuff! If you can figure out what year you nead, you can search the www.thirdgen.org forums for a "c207 diagram", or google search the same. You can also try this one: