Hi,
Does anyone have the wiring diagrams for the lights on a 1989 Ford F350? By lights I mean, headlights, headlight switch, hi/lo switch, cab clearance lights, brake lights, turn signals, tail lights, and dually fender running lights, etc.

I'd really appreciate it if you could share them. A electrical manual off of eBay is almost a hundred $, and my Haynes book isn't cutting it.

Thanks!

 

Here's the schematics for a 88 but should be close to a 89.

 

I checked Helm.
They are out of stock on '89 EVTM's.

You should watch Ebay. The Electrical & Vacuum Troubleshooting Manuals usually go for $10-20 depending on condition.
Helm is $19 brand new.

The best way to get schematics like those above.
It is nice to have testing procedures and each circuit broken out by itself.