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  #11  
Old 10-02-2021, 12:13 PM
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Quote:
Originally Posted by HansBimmers View Post
The hopkins Impulse is not activated for a period of time, as that is only a misunderstanding of its name.
It is considered a time based brake control. It even says it in the company's own description of the product. In the 25+ year I have being in the RV industry and setting up countless wire to tows, I have seen far too many of these types of controllers fail, if it works for you great, I was just giving you an opinion.

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Originally Posted by HansBimmers View Post
Thanks for the replies, but to repeat- Does anyone know where and which wire gives a clean brake pedal signal for hard wired controllers? Mine is pretty much done and towing/braking fine in daytime.

Thanks Again!
You would do this at the LCM, like its been previously stated.
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  #12  
Old 10-02-2021, 07:56 PM
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Okay then, I guess I'm going to be spending hours digging around for this information then. Yay for me.
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  #13  
Old 10-05-2021, 09:22 AM
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Mine never had a "clean" signal from any wire in the LCM. There are two wires in the LCM that give a brake signal, but one also pulses with the turn signal, and the other seems to be slightly under-voltage, which results in my Prodigy2 controller display spazzing out. Despite the display issues, the controller DOES work, so I put up with it for a couple years. Supposedly, you can find a clean source at the high-mounted brake light on the rear hatch. I never bothered, so I can't verify.

AM.
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  #14  
Old 10-05-2021, 11:28 AM
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Yes, I believe that's my problem too. It was a few years ago so my memory might be hazy. But taking the brake wire out of the LCM, it gives me the proper signal all the time EXCEPT when my left turn signal is on. If the left turn signal is on the brake signal blinks with the turn signal. I feel like I determined that there was a logical reason for this back when I wired it up, but I can't remember what it is now.
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  #15  
Old 10-06-2021, 06:08 PM
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Originally Posted by Attacking Mid View Post
Mine never had a "clean" signal from any wire in the LCM. There are two wires in the LCM that give a brake signal, but one also pulses with the turn signal, and the other seems to be slightly under-voltage, which results in my Prodigy2 controller display spazzing out. Despite the display issues, the controller DOES work, so I put up with it for a couple years. Supposedly, you can find a clean source at the high-mounted brake light on the rear hatch. I never bothered, so I can't verify.

AM.
I will see if I can find what wire I have, I have no problems with mine after install. Keep in mind that you need to use a PWM trailer light module as well, are you doing this or did you tap directly into the tail lights for the right/left/tail signals?

edit; 15 pin black connector on LCM Pin 10 "high mounted center stop light"
blue with yellow trace.

This is what it is for my 03 4.4, I would assume the other model years are the same but I dont know

Last edited by Lowblock; 10-06-2021 at 06:14 PM.
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  #16  
Old 10-06-2021, 06:15 PM
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Originally Posted by Lowblock View Post
I will see if I can find what wire I have, I have no problems with mine after install. Keep in mind that you need to use a PWM trailer light module as well, are you doing this or did you tap directly into the tail lights for the right/left/tail signals?
I had the BMW harness installed. Only the brake controller wiring was separate, as BMW didn't provide for that in their harness.

I have recently removed my hitch and sold it as I'm preparing to sell my E53. I really liked my E53, but the M54 just didn't have enough power to tow my camper trailer. I now have an E70 35d that pulls it with much more authority, and the trailer wiring harness in it DOES include provisions for the brake controller.

If only the actual hitch was as beefy and well-engineered as the E53 hitch!

AM.
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