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Old 11-15-2021, 11:34 AM   #1
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Know what this plug is for?

Anyone know what this plug is for, above the radiator? I thought it had something to do with towing? There is a 7 pin towing connector next to the hitch though.

2011 Fleetwood Discovery 40G on a Freightliner XC Chassis
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Old 11-15-2021, 11:46 AM   #2
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It's the connector for your ECM (Engine Control Modul)
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Old 11-15-2021, 12:52 PM   #3
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It a J 1939.
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Old 11-15-2021, 01:40 PM   #4
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Right!! the teck can plug in his computer and Wala read your palm. On board computer!!
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Old 11-15-2021, 02:58 PM   #5
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Isn’t that the plug for the Freightliner Hyperdrive
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Old 11-16-2021, 04:45 AM   #6
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All the above and you probably have another connector just like it under your dash. I use mine to hook up a Bluefire system, there are other diagnostic systems you can use to give you on board information.
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Old 11-16-2021, 11:35 AM   #7
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Thanks to all who posted that really helps. Learning something new every week on the rig.
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Old 11-18-2021, 06:16 PM   #8
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Quote:
Originally Posted by RayJr View Post
Right!! the teck can plug in his computer and Wala read your palm. On board computer!!
Remember where it is. When I took my coach to Freightliner for service, I had to show the tech where it was located.
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