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The Terminator
Engine/Tuning
03-04 cobra conversion specialist- Looking for opinion on cobra harness differences
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<blockquote data-quote="decipha" data-source="post: 16273612" data-attributes="member: 74327"><p>you should never swap a cobra harness in to a vehicle when doing the cobra engine swap thats just a horrible idea and makes it significantly more time consuming and difficult than it needs to be</p><p></p><p>Keep the gt harness.</p><p></p><p>You will need to unpin the connector for the coils and flip the wires around. 4v coils are reverse polarity compared to the 2v coils. Same goes for the alternator just swap the wires around. The middle wire isn't needed if you have one. If you have the cobra alternator connector you will see the wires are swapped just simply keep the wiring colors the same.</p><p></p><p>You will need to cut the wires going to the iat sensor and extend and run them to the iat2 sensor. That's the sensor at the back of the lower intake.</p><p></p><p>The bypass actuator gets hooked up to manifold vac. The boost bypass solenoid is not used.</p><p></p><p>Most people hook up the intercooler pump relay so it comes on with key on / ignition. If you have an unused ecu output pin though you can wire it up to that and enable the ic pump and assign it to that pin in the tune.</p><p></p><p>There is no other wiring modifications needed. The GT wiring harness and ecu is otherwise the same as the cobra.</p><p></p><p>I just posted this yesterday in another thread <a href="https://www.svtperformance.com/threads/terminator-engine-swap-into-03-gt.1177683/" target="_blank">https://www.svtperformance.com/threads/terminator-engine-swap-into-03-gt.1177683/</a></p></blockquote><p></p>
[QUOTE="decipha, post: 16273612, member: 74327"] you should never swap a cobra harness in to a vehicle when doing the cobra engine swap thats just a horrible idea and makes it significantly more time consuming and difficult than it needs to be Keep the gt harness. You will need to unpin the connector for the coils and flip the wires around. 4v coils are reverse polarity compared to the 2v coils. Same goes for the alternator just swap the wires around. The middle wire isn't needed if you have one. If you have the cobra alternator connector you will see the wires are swapped just simply keep the wiring colors the same. You will need to cut the wires going to the iat sensor and extend and run them to the iat2 sensor. That's the sensor at the back of the lower intake. The bypass actuator gets hooked up to manifold vac. The boost bypass solenoid is not used. Most people hook up the intercooler pump relay so it comes on with key on / ignition. If you have an unused ecu output pin though you can wire it up to that and enable the ic pump and assign it to that pin in the tune. There is no other wiring modifications needed. The GT wiring harness and ecu is otherwise the same as the cobra. I just posted this yesterday in another thread [URL]https://www.svtperformance.com/threads/terminator-engine-swap-into-03-gt.1177683/[/URL] [/QUOTE]
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03-04 cobra conversion specialist- Looking for opinion on cobra harness differences
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