Jomorisn Posted December 22, 2022 Share Posted December 22, 2022 I have a 20032 CH613 the dash lights and headlights running lights stopped working. Is there a relay for these? Thanks in advance any and all help is apreciated. thanks John Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/ Share on other sites More sharing options...
Joey Mack Posted December 22, 2022 Share Posted December 22, 2022 In the cab. Right side fuse panel. Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-518852 Share on other sites More sharing options...
Jomorisn Posted January 4, 2023 Author Share Posted January 4, 2023 I did replace the relay and still have the same problem not sure where to go next any and all help is great thanks in advance Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519923 Share on other sites More sharing options...
Joey Mack Posted January 4, 2023 Share Posted January 4, 2023 Im guessing its a 2002 CH? The headlight wire harness runs along the left side of the engine block, behind the oil filters. There are a few points where it is held by 'P' clamps.. they will wear through the wires, and short out the lights. also,, attached to the left side steering box upper mount bolt, , is a clamp that holds the hood wire harness... 2 square,, 4 pin plugs.. Issues can happen there.. then there is the wires going into the rear of the headlight buckets, if there is poor conditions there, the wires can be cut by the fiber glass.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519925 Share on other sites More sharing options...
Onyx610 Posted January 4, 2023 Share Posted January 4, 2023 Power to the switch? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519926 Share on other sites More sharing options...
Joey Mack Posted January 4, 2023 Share Posted January 4, 2023 you know,,,, another issue that plagues dash lights in these model's, is the dimmer switch... you can turn the lights on, and with the side of your finger, work the dimmer switch knob back and forth as fast as you can.. this has actually cleaned the contacts inside the knob assembly.. jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519927 Share on other sites More sharing options...
Jomorisn Posted January 4, 2023 Author Share Posted January 4, 2023 I will check the headlights work fine it I have no dash or running lights cab lights marker or tail lights I read there’s a pressure switch that can cause this problem but the headlights still work at a loss here I will chase the harness this weekend Thanks John Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519928 Share on other sites More sharing options...
Joey Mack Posted January 4, 2023 Share Posted January 4, 2023 pull the DRL module out of the fuse panel in the cab, and re-test.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519929 Share on other sites More sharing options...
Joey Mack Posted January 4, 2023 Share Posted January 4, 2023 did you check the fuse in the EPDM on the fire wall next to the steering column? Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519930 Share on other sites More sharing options...
Vmac3 Posted January 4, 2023 Share Posted January 4, 2023 After you checked what has been suggested, there is a harness on the driver side that goes up the A-pillar to supply power to the clearance lights. remove the side carpeting to access the harness. Sometimes that harness connector corrodes and sometimes shorts out the clearance lights which will also make the dash lights stop working. V 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-519953 Share on other sites More sharing options...
JPK4575 Posted March 22, 2023 Share Posted March 22, 2023 Unhook signal light switch if it doesn’t trip the relay replace signal light switch. Quote Link to comment https://www.bigmacktrucks.com/topic/70907-ch613-running-lights-and-dash-lights-dont-work/#findComment-527640 Share on other sites More sharing options...
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