DIY: Injector driver install
Thread Starter
Joined: Oct 2005
Posts: 2,519
Likes: 0
From: El Segundo, CA
DIY: Injector driver install
Well my injectors and my new FJO injector driver have been sitting around for a few weeks awaiting install and I decided to start tonight, so here we go.
Disclaimer:
The method used here was intended for my use, I assume no responsibility if break something using this method.
This method was intended for the FJO injector driver, but other injector driver installs I imagine would be similar, if not identical.
I went with the FJO injector driver, as it is a 4 channel driver and more economical than the AEM unit.
For starters, as always, disconnect your battery.
Remove the fuel rail and injectors.
If you are upgrading from factory injectors, make sure you take out this "O ring".
Comparison of factory injector to a Siemens 875cc injector.
If you are using new clips, mark them positive and negative.
Find a mounting place for the injector driver, I mounted mine here
The black wire coming from the injector driver is the ground, ground it.
Here is a wiring diagram and pic of the wires
Start soldering the negative leads from the injector clips to the white/striped wires from the injector driver
Be sure to use wire shrink wrap to keep the connections safe from the elements
I was doing a bunch of other soldering today while finishing up my fusebox relocation, and for some reason my soldering iron gave out after soldering 1 clip to the injector driver, so I'm going to have to stop here for tonight until I get another soldering iron.
Stay tuned.
Update:
Spent a little bit fiddling around before I came in and started cooking lunch. I'll be finishing it up after I eat.
Make sure your solders are good
Finish soldering all of the negative leads to the white/striped wires
Now start hacking into the injector harness. Take off all of the electrical tape/harness protector
If using new clips, go ahead and snip off the factory ones
Lunchtime, will update this afternoon/evening.
Update:
Well I made a dumb error and didn't realize it until I finished. Turns out I marked the positive and negative leads on the clips wrong, I'm going to need to swap them.
The above information is all correct, just make sure you mark the clips right. (Measure twice, cut once)
From the injector harness, each injector has 2 wires going to it. A yellow/black one, and a colored one. The yellow/black one is the 12v power source, and the colored one is the ground (this goes back to the ECU). (Cyl 1 happens to be brown)
The instructions say to connect the red wire from the driver to the injector 12v power wire. From what I saw our car doesn't have a single injector power wire visible on this part of the harness, as each injector has its own yellow/black power wire. I just decided to connect all of the yellow/black wires and also connect 5 leads to it, one for the driver, four for the injectors. A bit sloppy, yes, but it should work.
Solder the red driver wire to one of the leads you just made:
Solder the other four to the remaining open injector clip leads.
Almost done
Now solder the remaining injector wires from the harness to the corresponding injector driver wires.
Brown goes to the orange driver wire (Cyl 1)
Blue goes to the blue driver wire (Cyl 2)
Red goes to the yellow driver wire (Cyl 3)
Yellow goes to the green injector wire (Cyl 4)
And that's it!
Be sure to wrap everything up and if you can, get another wire protector. I'll update once I do.
Any questions, just ask!
Disclaimer:
The method used here was intended for my use, I assume no responsibility if break something using this method.
This method was intended for the FJO injector driver, but other injector driver installs I imagine would be similar, if not identical.
I went with the FJO injector driver, as it is a 4 channel driver and more economical than the AEM unit.
For starters, as always, disconnect your battery.
Remove the fuel rail and injectors.
If you are upgrading from factory injectors, make sure you take out this "O ring".
Comparison of factory injector to a Siemens 875cc injector.
If you are using new clips, mark them positive and negative.
Find a mounting place for the injector driver, I mounted mine here
The black wire coming from the injector driver is the ground, ground it.
Here is a wiring diagram and pic of the wires
Start soldering the negative leads from the injector clips to the white/striped wires from the injector driver
Be sure to use wire shrink wrap to keep the connections safe from the elements
I was doing a bunch of other soldering today while finishing up my fusebox relocation, and for some reason my soldering iron gave out after soldering 1 clip to the injector driver, so I'm going to have to stop here for tonight until I get another soldering iron.
Stay tuned.
Update:
Spent a little bit fiddling around before I came in and started cooking lunch. I'll be finishing it up after I eat.
Make sure your solders are good
Finish soldering all of the negative leads to the white/striped wires
Now start hacking into the injector harness. Take off all of the electrical tape/harness protector
If using new clips, go ahead and snip off the factory ones
Lunchtime, will update this afternoon/evening.
Update:
Well I made a dumb error and didn't realize it until I finished. Turns out I marked the positive and negative leads on the clips wrong, I'm going to need to swap them.
The above information is all correct, just make sure you mark the clips right. (Measure twice, cut once)
From the injector harness, each injector has 2 wires going to it. A yellow/black one, and a colored one. The yellow/black one is the 12v power source, and the colored one is the ground (this goes back to the ECU). (Cyl 1 happens to be brown)
The instructions say to connect the red wire from the driver to the injector 12v power wire. From what I saw our car doesn't have a single injector power wire visible on this part of the harness, as each injector has its own yellow/black power wire. I just decided to connect all of the yellow/black wires and also connect 5 leads to it, one for the driver, four for the injectors. A bit sloppy, yes, but it should work.
Solder the red driver wire to one of the leads you just made:
Solder the other four to the remaining open injector clip leads.
Almost done
Now solder the remaining injector wires from the harness to the corresponding injector driver wires.
Brown goes to the orange driver wire (Cyl 1)
Blue goes to the blue driver wire (Cyl 2)
Red goes to the yellow driver wire (Cyl 3)
Yellow goes to the green injector wire (Cyl 4)
And that's it!
Be sure to wrap everything up and if you can, get another wire protector. I'll update once I do.
Any questions, just ask!
Thread Starter
Joined: Oct 2005
Posts: 2,519
Likes: 0
From: El Segundo, CA
Updated and finished.
corners2fast4u: There are 2 O rings you use on the injector that seal them on the manifold and 1 O ring that seal them to the fuel rail. I think I'm going to need to space my fuel rail a bit, as these injectors seem a bit longer, but I'll cross that bridge another time.
corners2fast4u: There are 2 O rings you use on the injector that seal them on the manifold and 1 O ring that seal them to the fuel rail. I think I'm going to need to space my fuel rail a bit, as these injectors seem a bit longer, but I'll cross that bridge another time.
Registered User
Joined: Sep 2006
Posts: 169
Likes: 0
Can't wait to see the results! You are smart choosing that injector as I am sure you have done research. Not knocking other brands but the spray pattern for these injectors are top notch. Others spray like a fire hose which cannot be good for fuel atomization.
