DBW: Not on ECU Harness

[James]

I'm trying to see where to extend the DBW wiring on a 2010 Camaro SS Auto wiring harness. I went with that one, because it uses VVT. I'm assuming the wires are attached to the X102 socket, and I need to pull them from there and run a pigtail to the pedal?

Here is a picture of an unmodified harness

And here is one modified. Do the wires come out of the X102 socket?

 

[Eric McClellan]

If your dbw wire is part of the harness you can peel back the loom and that should give you plenty of extra wire to work with.

 

[James]

True,, but if you look at the unmodified harness on top,, there isn't anything showing what wires to tap off of to use for the DBW setup.

 

[Will Campbell]

True,, but if you look at the unmodified harness on top,, there isn't anything showing what wires to tap off of to use for the DBW setup.

In your picture, it's the wire set marked "gas pedal".

You don't "tap off" them, you extend the wires. Probably the easiest way for you might be to get an extension harness made up.

The wiki has a full writeup on the topic. Here's the link.

 

[James]

In your picture, it's the wire set marked "gas pedal".

You don't "tap off" them, you extend the wires. Probably the easiest way for you might be to get an extension harness made up.

The wiki has a full writeup on the topic. Here's the link.

I'll give the link a look.

If you notice, the "gas pedal" isn't attached to anything. They had to modify the harness to look like the bottom picture. I'm assuming they pulled out the wires and hooked it up to the plug. I guess the question is,, what wires to I pull out of the harness to extend to the accelerator pedal plug.?

 

[Will Campbell]

True,, but if you look at the unmodified harness on top,, there isn't anything showing what wires to tap off of to use for the DBW setup.

Wait- you are using a cut up harness from another car for your SLC???

You'll need to consult a manual for that car to see where the pedal/ETC wires come out.

Unless VVT is really important to you, I'd use the GMPP harness and find a way to disable the VVT.

 

[James]

Wait- you are using a cut up harness from another car for your SLC???

You'll need to consult a manual for that car to see where the pedal/ETC wires come out.

Unless VVT is really important to you, I'd use the GMPP harness and find a way to disable the VVT.

No that picture is for reference only. The harness I have is brand new.

I think VVT is a bit of an advantage, as it gives you a bit more area under the curve. You can run a bit less aggressive of a cam and have a little more power.

I know it's just six wires (maybe less), just don't where which ones to pull out to attach to the pigtail.

 

[Alex]

They had to modify the harness

Ask a bunch of strangers online?

Ask the company that modified the harness?

Hmmmmm :idea:

 

[James]

Already emailed the guy, site is pretty old, not sure if he'll respond...

 

[Ken Roberts]

I might be able to help you when I get home from work. If I have the pin outs for the connectors of a 2010 Camaro it will be easy for me as I built all my SLC wiring from stock GM harnesses.

 

[Ken Roberts]

You are correct though. Connector x102 will have the 6 accelerater pedal wires.

 

[James]

I might be able to help you when I get home from work. If I have the pin outs for the connectors of a 2010 Camaro it will be easy for me as I built all my SLC wiring from stock GM harnesses.

Sweet, it would help a lot. Thanks

 

[Ken Roberts]

So you bought a new or used wiring harness from a 2010 Camaro and you want to make it stand alone? You won't get very far without schematic diagrams and pinouts of all the various connectors. Do you understand that you have to know the pinouts for connector X102 and the large connector "underhood fuseblock X3". A factory service manual for the car is mandatory. You basically must decode all the wires from these two connectors then construct your own standalone fuse panel. Do you know what circuits require ignition power and which circuits require battery power? You need to make fused circuits for the injectors, coils, oxygen sensors, ECM power, starter, fuel pump etc. etc. Can you read and understand schematics? Add in the circuits for control of VVT and you complicate it even more.
There are companies that offer this conversion service if it is too much for you.

Here is the pin assignment for connector X102 (accelerator pedal)

2-Dark Blue (1161) .......................goes to acc pedal "E"
3-White/Black stripe (1164)............goes to acc pedal "F"
4-Brown (1271).............................goes to acc pedal "D"
5-Light Blue (1162)........................goes to acc pedal "B"
6-Tan (1274).................................goes to acc pedal "C"
7-Purple (1272)..............................goes to acc pedal "A"

 

[Ken Roberts]

Here is the X102 connector pinouts

2010 L99 LS3 Camaro X102 Connector

Here is the X3 connector pinouts

http://www.lt1swap.com/2010camaro_underhood_x3.htm

Here are the 2 E38 ECM connector pinouts

http://www.lt1swap.com/2010camaro_ecm_pinouts.htm

 

[Ken Roberts]

Here is a good source for engine circuit schematics.

Wiring Diagram Search Results

 

[James]

Thanks Ken.

I haven't really delved into the ISIS system. I'm wondering how "painless" it makes it, for the stuff not covered with the engine harness.

 

[Alex]

Thanks Ken.

I haven't really delved into the ISIS system. I'm wondering how "painless" it makes it, for the stuff not covered with the engine harness.

one wire to an off/on witch
one wire to item (e.g., fuel pump) +
ground the item (e.g., fuel pump) -

done

 

[James]

So you bought a new or used wiring harness from a 2010 Camaro and you want to make it stand alone? You won't get very far without schematic diagrams and pinouts of all the various connectors. Do you understand that you have to know the pinouts for connector X102 and the large connector "underhood fuseblock X3". A factory service manual for the car is mandatory. You basically must decode all the wires from these two connectors then construct your own standalone fuse panel. Do you know what circuits require ignition power and which circuits require battery power? You need to make fused circuits for the injectors, coils, oxygen sensors, ECM power, starter, fuel pump etc. etc. Can you read and understand schematics? Add in the circuits for control of VVT and you complicate it even more.
There are companies that offer this conversion service if it is too much for you.

Here is the pin assignment for connector X102 (accelerator pedal)

2-Dark Blue (1161) .......................goes to acc pedal "E"
3-White/Black stripe (1164)............goes to acc pedal "F"
4-Brown (1271).............................goes to acc pedal "D"
5-Light Blue (1162)........................goes to acc pedal "B"
6-Tan (1274).................................goes to acc pedal "C"
7-Purple (1272)..............................goes to acc pedal "A"

Thanks for the links. I'm assuming I would have to get a fuse/Relay box for the stuff not covered with the ISIS system.

Fuel Injector Fuse (1,3,5,7)
Fuel Injector Fuse (2,4,6,8)
Ignition Voltage
Powertrain Relay Control
Heated O2 Sensor
Ignition Voltage - MAF

I think the ISIS system takes care and fuse protects the rest (ie, starter, AC, cooling fans). If I am wrong please someone tell me.

 

[Ken Roberts]

Don't forget the coils.

Current Performance has a nice pre wired fuse panel for about $125.

 

[James]

Don't forget the coils.

Current Performance has a nice pre wired fuse panel for about $125.

I wonder if it would be doing one better by tying them into the ISIS system. Might have to get an additional box though.