leversole Posted June 9, 2011 Share Posted June 9, 2011 Spent a few days on the highway with my family...every modern truck I passed had what looked like a water proof electrical connector in the lower cab under the drivers door...My momma asked what it was, I told her I didnt know, but assumed it my be for a trouble light or for external add on flashers/lights?What are they for?Thanks Quote Link to comment Share on other sites More sharing options...
vision386 Posted June 9, 2011 Share Posted June 9, 2011 I'm guessing what you are refering to,is the external plug for the engine block heater,under the side of the cab,looks a lot like a trailer connection plug? used to keep the oil temp.up in cold weather,and makes for easier cold starts................Mark Quote Mack Truck literate. Computer illiterate. Link to comment Share on other sites More sharing options...
leversole Posted June 9, 2011 Author Share Posted June 9, 2011 I'm guessing what you are refering to,is the external plug for the engine block heater,under the side of the cab,looks a lot like a trailer connection plug? used to keep the oil temp.up in cold weather,and makes for easier cold starts................MarkI am quite the quite the dumbass! I have one on the front of my truck! Didbnt think of the block heater connection!Thanks! Quote Link to comment Share on other sites More sharing options...
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