Duster Posted Sunday at 12:54 PM Share Posted Sunday at 12:54 PM 2001 Mack ch road tractor daycab drl breaker is out when turn on lights the marker switch or dash dimmer don’t work it’s all on or off by headlight switch including trailer just curious Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/ Share on other sites More sharing options...
0 Joey Mack Posted Sunday at 01:10 PM Share Posted Sunday at 01:10 PM Did you unplug the dash dimmer switch? Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572368 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:24 PM Author Share Posted Sunday at 01:24 PM No it was done before got truck never put one back Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572369 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:25 PM Author Share Posted Sunday at 01:25 PM Dory I meant dlr never check dimmer Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572370 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:27 PM Author Share Posted Sunday at 01:27 PM But all lights only work with headlights on except the two on outside cab on the other switch Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572371 Share on other sites More sharing options...
0 Joey Mack Posted Sunday at 01:28 PM Share Posted Sunday at 01:28 PM Ok. That switch can cause issues. Leave it unplugged for now. Do your head light wires still run behind the oil filters? If so, look at 'P' clamps to see if thy are cutting into the wires, as well as rubbing the block, also, check where the go around the steering box for wear. Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572373 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:30 PM Author Share Posted Sunday at 01:30 PM But all lights only work with headlights on except the two on outside cab on the other switch Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572374 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:31 PM Author Share Posted Sunday at 01:31 PM The run down frame come out steering box look okay Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572375 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:32 PM Author Share Posted Sunday at 01:32 PM If the headlight switch is bad would it cause this Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572376 Share on other sites More sharing options...
0 Joey Mack Posted Sunday at 01:34 PM Share Posted Sunday at 01:34 PM Ok. Im not sure at this point, assuming the headlight switch and turn signal switch is ok. Van you unplug the turn signal switch and try again Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572377 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:34 PM Author Share Posted Sunday at 01:34 PM Everything works okay it just all on or all off Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572378 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:36 PM Author Share Posted Sunday at 01:36 PM I will tomorrow the signal light switch works fine high low and flash Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572379 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:40 PM Author Share Posted Sunday at 01:40 PM It’s just little weird the dash lights all work just can’t dim I never replaced the drl breaker but would think that’s it but I’m not sure the headlights were replaced but look to be done right Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572380 Share on other sites More sharing options...
0 Joey Mack Posted Sunday at 01:41 PM Share Posted Sunday at 01:41 PM Its hard to diagnose electrical issues after the common issues are ruled out. Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572381 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:42 PM Author Share Posted Sunday at 01:42 PM This is the same truck we talked about last year about horse power and not knowing the engine which is great it runs even stronger now I just don’t ask let it go Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572382 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:43 PM Author Share Posted Sunday at 01:43 PM I’ve come to conclusion this truck is??! Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572383 Share on other sites More sharing options...
0 Duster Posted Sunday at 01:45 PM Author Share Posted Sunday at 01:45 PM It smokes a little when taking off change gears on mountain pyro stays out red runs about 210 on hard pull I’ve been drive different truck 45 years lots Mack but this one impressed me 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75339-headlight-marker-light-issuse/#findComment-572384 Share on other sites More sharing options...
Question
Duster
2001 Mack ch road tractor daycab drl breaker is out when turn on lights the marker switch or dash dimmer don’t work it’s all on or off by headlight switch including trailer just curious
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