2006 Freightliner M2 - No Right Headlamp / Frt Ambers on fenders or Hazard lights

Thanks for checking. I know the aux power distro box on the frame cross member has relays and such for the marker lights. No mention of headlamps. I'll look back underneath to see if I can find the box you're describing.

We flicked the cruise lever three times and got the check engine light to flash some numbers. Can't find out what they mean:

5 and 8
6 and 3
2 and 9
5 and 1

 

Here's the culprit. What we Air Force guys call an R-12 Fuel Truck. Basically it transfers jet fuel from the ground hydrant to the aircraft, and doesn't have an on board large fuel tank to lug around. Also a pic of our battery compartment, master switch and rea of the cab. No box that I can see besides the one pic of the power distro box from the frame cross-member near the rear axle. I know our problem is something simple... just finding what it is, that's the pain. Day 4 of troubleshooting tomorrow.

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Lets try this again...

 

You're the man Smellfunny. I had almost given up hope of finding the chassis module, and then found it under the driver's side cab above the fuel tank forward of the battery box. Swapped it with one from its sister truck, and success! Now to order the module and wait for it to travel over here. Can't thank this group enough! Forums are the greatest thing ever. I only hope this thread can one day help others. 4 days of troubleshooting... thanks Freightliner for your fancy multiplexing system, ugh. Pics of the module attached. Thought the raised square bump-out would mean a quick swap of the relay mounted internally... not in this case. They fried this thing good when they hooked up jumper cables wrong. Always use the positive post in behind the left front tire. Lessons learned. I will spread the word to my mobile maintenance guys. Only thing still to figure out... the little beep that is still occurring. It stops when the brake is applied, but when released its there. Air is at 120, so its not that. Makes for an annoying drive.