Some more EFI swap info needed.

[88 Fox GT]

I ordered my EFI wiring harness last Monday, so it should be here soon. All I have left to do to the engine is mount on the oil pan and timing chain cover and it will be ready. Next, I need to order a new clutch kit then the engine will be ready to install into the car. There are a few things I am going to need to know.

First, I need to know what wires are going to have to be spliced into the stock fuse box, if any.

I also need a quick description of how the fuel pump relay system works and ties in with the ignition switch (i think?).

How about my alternator? I was reading on Hakans website that he forgot to hook up the warning light for the alternator and it caused the battery to go dead on a long drive.

This is just a few of the things I would like to know before I put the engine in the car, just incase. I'm sure I will have many more questions to be answered. Thanks for any help, guys!

 

[67coupestang]

The fuel pump relay is run off the computer, not directly off the ignition switch. Thats how you get the "hold the key on, fuel pump runs for 3 seconds, then crank". Dont know about any battery warning light, but hav you considered using a 3G? I had problems keeping up with all the fuel pumps, and new electrical load with my stock alternator...

 

[WORTH]

You said you ordered a harness, is it stock or aftermarket made for the swap?

 

[88 Fox GT]

67coupestang, yes I am using the 3G alternator.

WORTH, I ordered the wiring harness from fordfuelinjection.com

 

[WORTH]

67coupestang, yes I am using the 3G alternator.

WORTH, I ordered the wiring harness from fordfuelinjection.com

I would think it would come with a wiring diagram, if it doesn't I can figure out anything you need from the diagrams I have. Just let me know, also if you give me an email and the year make and model of the new engine setup I can send you the oem diagrams, they should help.

 

[69Horse]

Ryan make a really nice harness product wise, peoples only complaint with him is his lack of communications, take a look at his website here's the connections you'll need to tie it in Basically a start signal for the tfi and also a run for the computer.

I know his bronco harness's are pretty straight forward, I didn't know he was making a early mustang version

/Allen

 

[88 Fox GT]

His harness has to be the best one in the industry for the classic Mustangs. I have seen the others, their prices and layout can't compete. His is so simple looking. All one piece and $475 vs $600-$1000.

At first, I was asking him a few questions about it and he was very responsive. But, since I have ordered the harness, I have gotten nothing from him. No e-mail or anything confirming that he got my order and/or shipped it out. I even sent him an email asking about my order and have gotten no response so far. I'm kinda disapointed about that.

69horse, thanks for the diagrams. Guess I didn't notice them on his site.

 

[Fostang]

He's probably busy spending all that cash he made.

OR

Putting your harness together.

 

[69PaleHorse]

I think I want Fostang to help me build my conversion harness when it's time.

 

[88 Fox GT]

He's probably busy spending all that cash he made.

OR

Putting your harness together.

Yeah, I was thinking that could be a possibility also. He may be putting it together.

 

[Fostang]

I think I want Fostang to help me build my conversion harness when it's time.

Sure no problem.

 

[88 Fox GT]

Does anyone have a picture of their EEC mounted in the car? I am putting mine behind the glove box, but would like to see pics if you guys have them.

 

[Fostang]

up above the heater box.

NOTE: Don't drill into your cowl for the mounting brackets.

Sorry no pics as it's too hidden.