mechohaulic Posted October 16, 2022 Share Posted October 16, 2022 by chance anyone have a wiring diagram for a '84 L9000 . have one apart right now that has been hacked soo many times in the past. not mine helping a farmer had the truck for a while. trailer brakes stay on when red button pulled /NO brake lights when in drive mode.. there is power to both terminals on brake light switch / and 2 of the three terminals of lower pressure switch . going back tomorrow . and continuing online search when logging off BMT Quote Link to comment https://www.bigmacktrucks.com/topic/70582-1984-l-9000-wire-diagram-brake-light-circuit/ Share on other sites More sharing options...
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