Mike2002 Posted April 27, 2023 Share Posted April 27, 2023 Any help is appreciated… I have a 2002 RD688S E7 350. My reverse light and back up alarm came on and wouldn’t go off so I replaced the reverse switch on the trans (Eaton 8ll) all looked good and worked for a few trips then nothing. My reverse lines on the dash cam stopped showing then I noticed the lights and alarm stopped checked all wiring and it all seems ok. Also bought the sensor new from the local Mack dealership. Is there any fuses or relays for reverse lights? My diagram doesn’t read any listed out, so I’m at a loss at this point on things to try. Quote Link to comment https://www.bigmacktrucks.com/topic/72780-reverse-lights-2002-rd688s-tri-axel-dump-truck/ Share on other sites More sharing options...
Joey Mack Posted April 27, 2023 Share Posted April 27, 2023 Fuse 41 in the fuse box below the windshields. Quote Link to comment https://www.bigmacktrucks.com/topic/72780-reverse-lights-2002-rd688s-tri-axel-dump-truck/#findComment-530064 Share on other sites More sharing options...
Mike2002 Posted May 1, 2023 Author Share Posted May 1, 2023 My fuse panel only goes to 31. Am I missing something? Quote Link to comment https://www.bigmacktrucks.com/topic/72780-reverse-lights-2002-rd688s-tri-axel-dump-truck/#findComment-530592 Share on other sites More sharing options...
Joey Mack Posted May 1, 2023 Share Posted May 1, 2023 (edited) Third row from the left half way down. 2 fuses, ECM and Back up lights.. Edited May 1, 2023 by Joey Mack Poor sperring Quote Link to comment https://www.bigmacktrucks.com/topic/72780-reverse-lights-2002-rd688s-tri-axel-dump-truck/#findComment-530602 Share on other sites More sharing options...
Mike2002 Posted May 2, 2023 Author Share Posted May 2, 2023 Here’s mine Quote Link to comment https://www.bigmacktrucks.com/topic/72780-reverse-lights-2002-rd688s-tri-axel-dump-truck/#findComment-530660 Share on other sites More sharing options...
Solution Joey Mack Posted May 2, 2023 Solution Share Posted May 2, 2023 Thats the panel that is in the cab. The reverse lights are fused in the box under the hood below the middle of the wind shields. Quote Link to comment https://www.bigmacktrucks.com/topic/72780-reverse-lights-2002-rd688s-tri-axel-dump-truck/#findComment-530661 Share on other sites More sharing options...
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