NewGuy Posted February 13, 2019 Share Posted February 13, 2019 2013 mack cxu I was sitting in the dock heard some clicking sound and all the light went dead and high beam kick on. I been looking for the blow fuse or rely No luck. And I dont have a fuse/rely diagram. Any help out there? Quote Link to comment https://www.bigmacktrucks.com/topic/55593-need-help-lights-not-working-only-high-beam/ Share on other sites More sharing options...
HeavyGunner Posted February 13, 2019 Share Posted February 13, 2019 The clicking sound leads me to lean towards a relay. Try swapping a couple of them and see if that fixes the problem. If it does replace the bad relay. Quote The problems we face today exist because the people who work for a living are outnumbered by the people who vote for a living.The government can only "give" someone what they first take from another. Link to comment https://www.bigmacktrucks.com/topic/55593-need-help-lights-not-working-only-high-beam/#findComment-415640 Share on other sites More sharing options...
Challenger Posted February 14, 2019 Share Posted February 14, 2019 (edited) Check your EPDM for corrosion. The epdm is the fuse box behind the clutch pedal or where the clutch pedal would be. The windshields would leak and water runs all over the epdm causing corrosion. Pull a few relays out and check them. Mack added a little rain coat to the epdm to keep water away. But I still see the with corrosion Had a truck where one headlight would turn on when the truck was sitting in the rain over night. Edited February 14, 2019 by Challenger Quote Link to comment https://www.bigmacktrucks.com/topic/55593-need-help-lights-not-working-only-high-beam/#findComment-415657 Share on other sites More sharing options...
1965 Posted February 14, 2019 Share Posted February 14, 2019 I guess I’ve got to rant. These cabs have been out for years! Why in the hell do they have this problem? Bullshit! I’m done 1 Quote Link to comment https://www.bigmacktrucks.com/topic/55593-need-help-lights-not-working-only-high-beam/#findComment-415658 Share on other sites More sharing options...
41chevy Posted February 14, 2019 Share Posted February 14, 2019 1 hour ago, 1965 said: I guess I’ve got to rant. These cabs have been out for years! Why in the hell do they have this problem? Bullshit! I’m done Why should volvo fix and issue with a product they want dead? 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/55593-need-help-lights-not-working-only-high-beam/#findComment-415670 Share on other sites More sharing options...
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