Removing ECU - wiring alternator?
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Senior Member
Joined: May 2005
Posts: 283
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From: MA
Removing ECU - wiring alternator?
I am in the process of removing my ecu and going 45 DCOE and using a dizzy with an msd box. I am down to the wiring. Wondering if anyone has gone through with this conversion and what they had to rewire to work around the ecu.
HAILERS
Joined: May 2001
Posts: 20,563
Likes: 27
From: FORT WORTH, TEXAS,USA
Originally Posted by J-Rat
Yeah, but IIRC, the charge and control lines on the N/A are inside the ECU main harness.
Ah, man. You did'nt say that. Someone forced you to say that with a gun at your head. Your going to lose your ProPay (whatever they call it in the AF) if you keep that up and they're going to take back your re-enlistment bonus to boot.
Give Rat an Article Fifteen. Bad Rat. Been drinking on the weekend again.
Okay, I have been known to be wrong, but dont those wires run in the main harness? not that they go to the ECU, but I am reasonably certain they are taped inside the harness.
Joined: Dec 2003
Posts: 6,598
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From: Temple, Texas (Central)
On the auto car I just pulled the engine on, the alt connection was on a seperate harness from the main engine harness. It was the one that went to the oil sensors and the tranny, among other things.
HAILERS
Joined: May 2001
Posts: 20,563
Likes: 27
From: FORT WORTH, TEXAS,USA
Originally Posted by J-Rat
Okay, I have been known to be wrong, but dont those wires run in the main harness? not that they go to the ECU, but I am reasonably certain they are taped inside the harness.
Not on a turbo car though, only non turbo. Talking series four. See Jpg attached.
So, cancel the Article Fifteen and it's one week KP for the RAT (yeah, I know, the AF doesn't have KP).
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I'm a boost creep...
Joined: Jan 2002
Posts: 15,608
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From: Auckland, New Zealand
Since this sounds very much like an NA engine, the alternator wires are in the EFI harness. J-Rat would be right and Hailers and Icemark would be wrong. 
The alternator wires will have to be replaced. Extract the alternator wires and plugs from the removed harness and and reinstall and reconnect them where they came from.
The real question is why are even doing this...
The alternator wires will have to be replaced. Extract the alternator wires and plugs from the removed harness and and reinstall and reconnect them where they came from.
The real question is why are even doing this...
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Yep, alternator wires are in the emissions harness. As well as the water temp sensor for the dash gauge.
All that has to be done is to seperate these three wires (um, yellow/white, white/black, black/white I think) from the main harness (as well as the wires to the wiper motor) and reinstall back into the car.
All that has to be done is to seperate these three wires (um, yellow/white, white/black, black/white I think) from the main harness (as well as the wires to the wiper motor) and reinstall back into the car.
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