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Thread: Exhaust brake issue

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    Basic Member Ghough1's Avatar

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    Exhaust brake issue

    I have a 2004 ram 3500 dually 6 speed manual with a Jacob's exhuast brake and 300k and counting if that matters.

    I have an issue with the Jacob's exhaust brake turning on. I've tested everything to just to find no issues with the vacuum system, electrical, or the viable its self. If I take the green wire that plugs into port 42 on the ecm and ground it the brake works with the switch pulled or pushed in but no led light. Please help I dont know where to go from here.


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    Re: Exhaust brake issue

    Quote Originally Posted by Ghough1 View Post
    I have a 2004 ram 3500 dually 6 speed manual with a Jacob's exhuast brake and 300k and counting if that matters.

    I have an issue with the Jacob's exhaust brake turning on. I've tested everything to just to find no issues with the vacuum system, electrical, or the viable its self. If I take the green wire that plugs into port 42 on the ecm and ground it the brake works with the switch pulled or pushed in but no led light. Please help I dont know where to go from here.
    Welcome friend! Is the switch itself bad maybe?


    2016 Ram Laramie 3500, G56, 6.7, MM3 by Double R Diesel, Rough Country Leveling, HID headlights, Morimoto LED fogs plus a whole lot more!

    2016 RAM 3500 4x4 Laramie Crew Cab ,G56

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    Basic Member Ghough1's Avatar

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    Re: Exhaust brake issue

    Well now I feel dumb as I over looked that I took the switch apart and the black, red, and yellow wire all broke right where they are soldered on so I resoldered them and now it works. Thanks!


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    DDP's Avatar

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    Re: Exhaust brake issue

    Quote Originally Posted by Ghough1 View Post
    Well now I feel dumb as I over looked that I took the switch apart and the black, red, and yellow wire all broke right where they are soldered on so I resoldered them and now it works. Thanks!

    No need to feel dumb what so ever. It's normally the small things that get overlooked and thankfully everyone on this forum is extremely helpful!

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    MOD watersupply189's Avatar

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    Re: Exhaust brake issue

    Quote Originally Posted by Ghough1 View Post
    Well now I feel dumb as I over looked that I took the switch apart and the black, red, and yellow wire all broke right where they are soldered on so I resoldered them and now it works. Thanks!
    No need to feel that way friend. Just glad you got it fixed.


    2016 Ram Laramie 3500, G56, 6.7, MM3 by Double R Diesel, Rough Country Leveling, HID headlights, Morimoto LED fogs plus a whole lot more!

    2016 RAM 3500 4x4 Laramie Crew Cab ,G56

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    Basic Member 03 unicorn's Avatar

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    Re: Exhaust brake issue

    Quote Originally Posted by Ghough1 View Post
    Well now I feel dumb as I over looked that I took the switch apart and the black, red, and yellow wire all broke right where they are soldered on so I resoldered them and now it works. Thanks!
    I had a similar thing with my trailer lights.

    I fallowed from the plug checking the in the loom all the way to the fuse box only to find out I had 2 blown fuses.

    Replaced them and i have lights again.


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