Hello, I am restoring the truck listed above W250 and I am looking for engine bay wiring diagrams and specific wire colors diagrams because I need to repair the wiring harness in multiple locations. Any pictures and PDF downloads would be very helpful.
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Monday, October 16th, 2023 AT 11:29 AM
9 Replies
KEN L
MASTER CERTIFIED MECHANIC
47,185 POSTS
Yep, here are the engine wiring diagrams that include the engine control module and I have included a guide to help you test the wiring connections as well.
Check out the images (below). Please let us know what happens.
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Monday, October 16th, 2023 AT 12:09 PM
JAIR
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This is helpful, but are these diagrams for a diesel truck? My truck is diesel and I noticed that these diagrams might be for a gas truck. Thanks for the help in advance.
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Tuesday, October 17th, 2023 AT 5:16 AM
KEN L
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Sorry, they don't show a diesel engine in this truck? Did someone install a different engine?
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Tuesday, October 17th, 2023 AT 9:43 AM
JAIR
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Uh not that I know of it is a 1990 Dodge W250 with a 5.9L turbo diesel.
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Tuesday, October 17th, 2023 AT 9:48 AM
KEN L
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Gotcha, here are the engine wiring diagrams needed. Check out the images (below).
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Tuesday, October 17th, 2023 AT 9:53 AM
JAIR
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Okay, thanks this is helpful. Also, if you have one for the main wiring harness that is in the engine bay (which plugs into the cab) that would be awesome.
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Tuesday, October 17th, 2023 AT 9:58 AM
JAIR
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I also need one that has the light circuit in it because my headlights and blinkers are not working properly.
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Wednesday, October 18th, 2023 AT 8:59 AM
KEN L
MASTER CERTIFIED MECHANIC
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Sorry, we only handle one problem per thread, please post your new question here, you must be logged in.