67RModel Posted February 17, 2022 Share Posted February 17, 2022 Does anybody have the part number for the panel/gauge light dimmer knob for a 1994 Mack RD? Also, what amperage should the panel light fuse be and what is the fuse number/location. I do not have a wiring diagram for this truck. Thanks in advance. Quote Link to comment https://www.bigmacktrucks.com/topic/69242-mack-rd-gauge-panel-light-dimmer-switch-part-number/ Share on other sites More sharing options...
67RModel Posted September 25, 2022 Author Share Posted September 25, 2022 Finally got around to fixing my dash lights. They are all wired through the dimmer rheostat. If your dash lights stop working it’s most likely your dimmer unit. Very easy fix. Below is a picture of the Mack (Volvo) part number you will need. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69242-mack-rd-gauge-panel-light-dimmer-switch-part-number/#findComment-510311 Share on other sites More sharing options...
Joey Mack Posted September 25, 2022 Share Posted September 25, 2022 Thanks for sharing... Yes those switches are a common cause for what happened to your truck.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69242-mack-rd-gauge-panel-light-dimmer-switch-part-number/#findComment-510314 Share on other sites More sharing options...
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