2006 International 4300 No low beam

I forget the pin #, but underhood brown connector on BCM coming out of driver side firewall. The brown connector can be purchased separately from IHC if it happens to be corroded or burnt. Unplug and inspect pins from inside connector.

 

Open circuit basically just like the description says. I know this sounds dumb, but did you actually check to make sure each bulb isn't simply burnt out? We chased a problem like this on a Prostar until we started over and found both bulbs burnt out and then the owner said this happened right after boosting it!
Anyway, single feel out from body controller. You can disconnect it at body controller and make sure there is power, connect a test light and perform a key cycle to clear the code. After that the wire goes through a rectangular connector in that harness mess below the fuse box. After that it splices to each headlight harness near the bumper.

 

Yummy!

 

In case you need, connector body part # 3548934C1
Terminal # 3535931C1