99 7.3 wiring harness

[Vana White]

Looking to replace my engine wiring harness for my 99 7.3 e350 powerstroke. Can't seem to find anything available on the market, has anybody done this and if so where do I go from here ??? Or what are my best options ???

[jkasten]

Reach out to Riff Raff diesel. They have want you need

[Vana White]

I hope so, I tried last week and haven't heard back yet. Pro source diesel couldn't help. I'll try again, it's not life or death but I'm having some work Done to her and figure it would be a great upgrade while the mechanic is in there anyway. Thanks for your reply...

[Vana White]

Riffraff told me the same I'm basically SOL , discontinued part. Said maybe I could find a new/ unused one on ebay or something. Believe I could get one for a similar year f350 and just extend the runs that are to short and make that work??? I.e. same motor, same sensors just different locations for the pcm and what not. Any thoughts out there about that idea???

[kbeefy]

I'm sure you could find a used one out of a salvage yard, whats wrong with yours? Might be less work to just repair what you have.


Do you happen to have the factory part number?

[Big_ern_101]

So ive built harnesses before, its really not too bad especially if you have a used one to copy.

Basically you get yourself a sheet of 1/2" or 3/8" plywood, whatever is cheap, and use some hooks and lay out the whole harness on the plywood. You can write your notes right on the plywood. Start by laying it out loomed so you get the layout, then unloom it, then untape it, making sure to keep the wires in their respective hooks. Once it is modified, loom and tape it back up. Not hard, just time consuming. Once you have a road map, its just a matter of going from A to B.


Could either build it from scratch if you want to and can find all the connectors or start with a similar year truck harness and modify as needed. I wouldnt cut and splice, I would depin connectors and crimp new pins on the wires and reinsert into the connectors.

[rescuejg]

Upgrade?

How many miles on your van?

Is there a current problem with the wire harness?

Unless your harness is visibly damaged or you have an electrical problem that you can't trace down and have excluded everything else, then replacing a harness as preventative maintenance is unnecessary. Some ppl have lots of money so such a replacement is no big deal. However the fact you are in a 99 van leads me to believe you don't have money to throw away.

I would say the vast majority of cars and trucks go until the end of their life with the original factory wire harness.

[Vana White]

Got 153k miles on it. I'm assuming it's in good shape. Just trying to throw an ounce of prevention on her since mechanic will already be in there. As as being a 99 model I couldn't be happier compared to what's being offered these days. My only complaint would be that vans can just be tuff to work on under the hood without having a proper shop to get the work done. Looks like I'm keeping the existing harness and will be doing other upgrades. Thanks for your input, I appreciate everyone's thoughts...