Eaton Swap / Alternator Question(s)... - 2003-04 Mach 1 Registry Owners Club

WERNER1 · 08-19-2020, 09:34 AM

Hey guys!

We are in the middle of our Eaton Swap on our 03 Mach 1 and I'm a little confused on some of the wiring..

We have the Cobra Engine Harness, Intercooler Pump, and just ordered the Cobra one for the Alternator/battery set up...

I understand that you can extend the OEM Mach 1 engine harness Alt. plug & Wiring to work, but I thought it would be better (simpler?) to have all of the "Cobra" stuff so everything was plug-n-play.

My question is this: Is there anything we need to be looking out for in terms of wiring ... this project has already been taking way too long and I'm just trying to eliminate any more potential delays as we've already had to back off our dyno tuning appointments twice now..

Thanks
Rick

311-420 · 08-19-2020, 12:19 PM

It's easier to keep the Mach 1 harness and computer. This thread will get you there. http://www.mach1registry.org/forums/...ad.php?t=71833

WERNER1 · 08-19-2020, 09:04 PM

Do you have to change the computer if you're using Cobra harnesses?.. I did read through some of that previously.. but man there's a LOT there..

311-420 · 08-19-2020, 10:58 PM

Quote:

Originally Posted by WERNER1

Do you have to change the computer if you're using Cobra harnesses?.. I did read through some of that previously.. but man there's a LOT there..

The computers and harnesses are specific to each other. That's why they're made differently. If a Mach 1 computer could control a Cobra harness, Ford would have never made a Cobra computer. It would have been money wasted and never approved.

You should read the threads that have been made. Your answers are in there. The member who wrote them took a lot more time writing them than you will reading them. You can think of it as a rite of passage lol.

hotford · 08-24-2020, 10:40 AM

Quote:

Originally Posted by 311-420

It's easier to keep the Mach 1 harness and computer. This thread will get you there. http://www.mach1registry.org/forums/...ad.php?t=71833

Yup........way easier!!

08-19-2020, 09:34 AM	#1
WERNER1 Registered User Join Date: Jun 2019 Location: Belleville Posts: 2	Eaton Swap / Alternator Question(s)... Hey guys! We are in the middle of our Eaton Swap on our 03 Mach 1 and I'm a little confused on some of the wiring.. We have the Cobra Engine Harness, Intercooler Pump, and just ordered the Cobra one for the Alternator/battery set up... I understand that you can extend the OEM Mach 1 engine harness Alt. plug & Wiring to work, but I thought it would be better (simpler?) to have all of the "Cobra" stuff so everything was plug-n-play. My question is this: Is there anything we need to be looking out for in terms of wiring ... this project has already been taking way too long and I'm just trying to eliminate any more potential delays as we've already had to back off our dyno tuning appointments twice now.. Thanks Rick

08-19-2020, 12:19 PM	#2
311-420 Can't be bridled Join Date: Sep 2007 Location: Texas Posts: 7,006	Re: Eaton Swap / Alternator Question(s)... It's easier to keep the Mach 1 harness and computer. This thread will get you there. http://www.mach1registry.org/forums/...ad.php?t=71833 __________________ 2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁

08-19-2020, 09:04 PM	#3
WERNER1 Registered User Join Date: Jun 2019 Location: Belleville Posts: 2	Re: Eaton Swap / Alternator Question(s)... Do you have to change the computer if you're using Cobra harnesses?.. I did read through some of that previously.. but man there's a LOT there..

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