DIY: Injector driver install

[TheCarGuy2021]

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 soldiering 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 soldiering today while finishing up my fusebox relocation, and for some reason my soldiering iron gave out after soldiering 1 clip to the injector driver, so I'm going to have to stop here for tonight until I get another soldiering iron.

Stay tuned.

[s2000isu]

Nice work. I always appreciate people that do their own work and are willing to show the steps involved.

[TheCarGuy2021]

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 soldiers are good


Finish soldiering 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.

[TheCarGuy2021]

Originally Posted by s2000isu

Nice work. I always appreciate people that do their own work and are willing to show the steps involved.

Thanks, I'll have a few DIY threads in the next few days including AEM MAP sensor install, fusebox relocation, battery relocation, AEM EMS install, and possibly a few others.

[dezignpro04]

Originally Posted by TheCarGuy2021

Thanks, I'll have a few DIY threads in the next few days including AEM MAP sensor install, fusebox relocation, battery relocation, AEM EMS install, and possibly a few others.

You are the MAN!!!

[lonestarbuzz]

Originally Posted by TheCarGuy2021

Thanks, I'll have a few DIY threads in the next few days including AEM MAP sensor install, fusebox relocation, battery relocation, AEM EMS install, and possibly a few others.

those are cool, but how bouts some that won't make me feel like an idiot!

j/k... keep 'em comin'! we need more how-to's on here.

[desmo4]

Originally Posted by TheCarGuy2021

Thanks, I'll have a few DIY threads in the next few days including AEM MAP sensor install, fusebox relocation, battery relocation, AEM EMS install, and possibly a few others.

I am not sure if you know about it but there is a heat shrink tubing which has glue inside it. And makes a water proof seal when you shrink it. I acquired some from Newark Electronics. It comes in various sizes and shrink factors.

Jonathan

[D1sclaimer]

Nice write-up. We really appreciate your help especially since you obviously know what you're doing. Thanks.

[TheCarGuy2021]

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.


Soldier the red driver wire to one of the leads you just made:


Soldier the other four to the remaining open injector clip leads.


Almost done


Now soldier 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!

[Sideways]

How are those 875s working out?

[TheCarGuy2021]

It's running on fine a base map I've tinkered with, idles like a champ. No tune yet.