CI am about to install a truck-side wiring harness on my ' 99 Ford F350. Anyone with experience would be awesome.

Check the wiring under the bed. You have a main trunk/ wiring harness, that runs down the drivers side of the frame rail and there will be a connector that splits the harness to both left and right tail lights. Make sure that it is plugged together tight and free of corrosion.

Installing 08 mirrors on 01 Superduty, looking for wiring diagrams ...

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have you removed the egr and checked for plugged in the egr port or damage to the egr itself... i think it's more of a flow issue associated with the position of the egr and not the solenoid itself... koeo/koer tests are a pain even with a break out box... good luck as this year (early 90's) of Ford's are the worst for diagnosing computer/running issues

Whenever I have had light problems, it seems 99% of the time it's related to the trailer wiring connector. Disconnect it and try the lights. You should be able to make an easy disconnection near the rear bumper by separating the wiring harness leading to the trailer connector.. If that doesnt work, make sure you have the correct relay and it's wired correctly. You may have the switch installed incorrectly or have the wrong switch altogether. One other thought, have you installed any auxillary lights? There may be a crossed wire somewhere.

pull the driver side door panel off and check if the wiring harness has come unplugged or loose

give these websites a try www.alldatadiy.com and www.autozone.com if all fails stop by your local Ford dealership in the parts department and they be able to print off the pictures and diagrams you need if all fails stop by your local library and get your hands on a Haynes auto repair manual for your truck wish you the best of luck Michigan Man.

Give this a shot.
http://pdfdatabase.com/index.php?q=ford+6+0+fuel+injector+diagram&filetype=0

They were the only place I could find that had the files, but I didn't download since I don't currently have the software to view .rar files, and didn't care to download it (also free).

If that doesn't work, you might have luck asking on www.thedieselgarage.com or www.oilburners.net . Good luck

check the wiring harnes to the radio,look for a loose or worn out connection at that point(the harness to the radio)

I find what I need @ powerstroke.org. Great website with lots of Information and its free.

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