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How to splice 2 injectors for the 3.9 to 5.9 swap

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How to splice 2 injectors for the 3.9 to 5.9 swap

  #1  
Old 04-19-2019, 08:16 PM
Aaron H
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Default How to splice 2 injectors for the 3.9 to 5.9 swap

I have the 5.9 engine and iím currently rebuilding it, but in the meantime i need to know how to splice the 2 injectors on the 3.9 wiring harness. Iíve looked everywhere, but couldnít find a detailed description of it. If anyone can either give me a detailed description on how to do it or maybe a link that you know of that will show how to do it then it would be much appreciated, thanks
 
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Old 04-19-2019, 08:28 PM
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Need a wiring diagram. Factory service manual is your best bet. (I don't know if the Dakota manuals are available in the FAQ/DIY section here... worth a look.) But, injectors get power from a common source, there is a splice in the harness (or two) where the individual wires break out. Injectors are controlled individually though, and you need to wire the ground side of the injector to the correct pin on the pcm connector.
 
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Old 04-20-2019, 11:03 AM
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What Heyyou said. Browse my build thread, I have description and photos of how I did it in there.
 
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Old 04-22-2019, 11:09 AM
Aaron H
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Originally Posted by magnethead View Post
What Heyyou said. Browse my build thread, I have description and photos of how I did it in there.
I couldnít find it man do you have a link? And if i were to get a new wiring harness will a 2wd one work?? thanks
 
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Old 04-22-2019, 10:42 PM
magnethead
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I was off by a page. I thought it was page 20, it was 19.

https://dodgeforum.com/forum/2nd-gen...ml#post3398465

If you have a 4x4, then the 2wd harness will not work. The engine harness includes the driveline portion. Also, the ram, ramvan, dakota, and durango engine harnesses are different. They are also different by year grouping (97/98, 99, 00, 01/02, 03/04) and by engine (3.7, 3.9, 4.7, 5.2/5.9). So the overall odds of getting the exact harness for your exact year, body, (desired) engine and driveline is pretty thin. It's easier to just pull the connector apart and stab the 2 extra wires in.
 
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Old 04-25-2019, 01:51 AM
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Originally Posted by magnethead View Post
I was off by a page. I thought it was page 20, it was 19.

https://dodgeforum.com/forum/2nd-gen...ml#post3398465

If you have a 4x4, then the 2wd harness will not work. The engine harness includes the driveline portion. Also, the ram, ramvan, dakota, and durango engine harnesses are different. They are also different by year grouping (97/98, 99, 00, 01/02, 03/04) and by engine (3.7, 3.9, 4.7, 5.2/5.9). So the overall odds of getting the exact harness for your exact year, body, (desired) engine and driveline is pretty thin. It's easier to just pull the connector apart and stab the 2 extra wires in.
Um what? 4wd and 2wd dont have different harness. Nor does a 5.2 or 5.9. 2wd/4wd magnum v8's are all the same within the year range. Now if the tcase is off an electric shift 4x4 ok. But that doesn't mean he couldnt use the engine harness from one.
 

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