Hook n ladder 1 Posted March 21, 2017 Share Posted March 21, 2017 All of a sudden I don't have any low beams or daytime running lights. I have highbeams (turned on and flash to pass), and markers. I checked the fuse and bulbs. Both ok. Is there a relay or breaker somwhere? I did not check the switch yet. It's a 1998 CH. Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/ Share on other sites More sharing options...
carlotpilot Posted March 21, 2017 Share Posted March 21, 2017 dimmer relay one of the square things in the fuse panel Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-365045 Share on other sites More sharing options...
Hook n ladder 1 Posted March 21, 2017 Author Share Posted March 21, 2017 Thanks I'll check it tomorrow Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-365047 Share on other sites More sharing options...
Hook n ladder 1 Posted March 22, 2017 Author Share Posted March 22, 2017 So today I now have low beams and no high beams (no flash to pass or no daytime running lights). I don't have anything marked dimmer relay but, I do have a relay marked "tilt ray" and that one seems to be clicking when I try to hit the high beams. Ill replace that one tomorrow. Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-365140 Share on other sites More sharing options...
Hook n ladder 1 Posted March 26, 2017 Author Share Posted March 26, 2017 I changed the "tilt ray" relay now im back to high beams only. My schematics say there is a CB 2 (circuit breaker 2) but i cant find it. I was going to try to replace that. Any one else have any ideas ? Thanks in advance. Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-365632 Share on other sites More sharing options...
hatcity Posted March 26, 2017 Share Posted March 26, 2017 take the access panel off and reach in behind switches. jiggle wires and listen, you may hear a clicking sound dash should be similar to mine (2001 CX) ended up a broken wire for running and low beams. Its in a bundle of wires so you will have to take whole panel off and slooooowly go thru each wire to find it Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-365634 Share on other sites More sharing options...
Hook n ladder 1 Posted March 26, 2017 Author Share Posted March 26, 2017 Thanks i'll give it a try. Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-365636 Share on other sites More sharing options...
Hook n ladder 1 Posted April 7, 2017 Author Share Posted April 7, 2017 I dont have any broken wires. Does the low beam wiring go through the dimmer switch? Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-366641 Share on other sites More sharing options...
GreenGiant2 Posted April 7, 2017 Share Posted April 7, 2017 Yes. Is the switch stuck Quote We the unwilling, Lead by the unqualified, are doing the impossible, for the ungrateful. Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-366642 Share on other sites More sharing options...
Hook n ladder 1 Posted April 10, 2017 Author Share Posted April 10, 2017 So I didnt have any broken wires in the cab. I decided to call my local Mack dealership. Bruce answers the phone. He knows everything Mack. He said usually the wires break near the plugs next to the lower portion of the radiator...where the wires wye off to each headlight. Thats exactly where the wire was broke. Thanks all you guys for your ideas. Quote Link to comment https://www.bigmacktrucks.com/topic/49216-no-low-beams/#findComment-366889 Share on other sites More sharing options...
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