Brake Wiring Question

[drj737]

I am trying to install a Street Magic Brake Light Flasher on my 07 K-9.

I have the wiring schematic and it shows an orange wire entering the controller for the brakes. The techs at Street Magic told me to place the flasher inline before it enters the controller. There are 3 orange wires in the bundle going into the controller. I have located an orange wire and when I place an ohm meter on it I get 16 volts and then when I apply either brake it goes down to 0 volts. This is backwards of what I thought should happen. Do I have the correct wire? The other 2 orange wires do not give me a reading when I apply the brakes. Any idea why I get these readings?

Thanks for the help. You guys are the best!

D

 

[PurpleDog]

Not experienced with what you're installing against our application personally, but...

given your looking at the schematic and according to the tech and schematic- it seems you'd want to splice into wire/pin A4 for rear/foot switch or B26 for front/hand activated right? both orange.

 

[chacha]

Do you still have the OEM EHC as the controller?

If so, did the tech at Street Magic know this?

...just say'n

 

[RRRUFF]

What chacha said, if you still have the oem EHC I think you are headed for trouble.

 

[bdmridgeback]

Disconnect the battery positive and negative. unplug the two main plugs into the EHC. The plug with the heavy green and red wire going into it is the "A" plug and the other is the "B" plug. On the plug, side with all the holes in it, the positions are numbered. You will probably have to take the plastic plug apart to trace the wire down seens how there are multiple orange wires.

Pin positiion A-4 at the EHC is the orange brake switch wire from the rear, it is negative output.

Pin position B-26 at the EHC is the orange brake switch wire from the front hand control and it is a negative output as well.

Or you can trace the orange wire forward from the brake switch at the rear caliper and make the connection under the seat where the harness comes up to the EHC. Or the orange wire can be traced under the tank from the hand control.

Adding a flasher ahead of the EHC on either of those wires shouldn't cause any issues because it is a straight ground coming out of the brake switches.

 

[drj737]

Thanks for the help. With the info that it is a negative output I called Street Magic and they said their unit would not work. It needs power to work so I will send it back. Anybody know a brake flasher unit that will work with a negative output? Anybody put one on and had problems?

D

 

[chacha]

737 wrote

With the info that it is a negative output I called Street Magic and they said their unit would not work.

Like I suspected. Doing any add-on modules to the BDM EHC is just asking for trouble in my opinion -- one of several reasons I ripped it out along with all the hand controls and the harness.

Low-voltage and negative inputs just ain't natural in the world of transport control -- :lol:

 

[scubaman15]

737 wrote



Like I suspected. Doing any add-on modules to the BDM EHC is just asking for trouble in my opinion -- one of several reasons I ripped it out along with all the hand controls and the harness.

Low-voltage and negative inputs just ain't natural in the world of transport control -- :lol:

:lol: Great answer !!!

 

[MikeG]

Personally, if I have concern about the person behind me when I am about to start slowing down, i just give my front brake a couple slight/easy pulls, just enough to trigger the stop lights and flash em', and then continue with braking. Just my 2 :zz2cents: