erie

OK so I have a 2006 Civic with the steering wheel controls, I have found the resistive wire in the radio loom(REMC -Pink), but it only shows resistance against the (REMG -Brown). I have tested the pink wire resistance against ground and I don't get any values. Will I still be able to use a voltage divider with this type of setup?

Here is the values I get from my meter on the 20k setting.
No buttons pressed: 9.94
Ch+ Pressed: 1.69
Ch- Pressed: .77
Vol+ Pressed: .36
Vol- Pressed: .10
Mode Pressed: 3.70

Could you help me out by giving the value of resisters I'll need to by?

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greenman100

REMC probably stands for remote control, and REMG probably stands for remote ground.

grab something around a 3.7kohm resistor, hook it up like this:



+5v is the inside pin
GND is the middle pin
the outside pin connects between the resistor and steering wheel

erie

Thanks for your responce, but I'm still a little confused, where would the REMG wire go in your diagram? When I did my tests the wire REMC was not connected to ground.

P.S. Thank you for your help
-=ew

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customaudioman

I have 03 honda accord with steering wheel controls. I went to hinda and they printed off diagram of the wiring system for radio. my diagram the resistive wire is the green/red
wire in the wire harness.on my setup , the brown wire is for if you have navigation, which I do not have. brown wire is what communicates info between the voice control switch, radio and nav. green/red is what gives the values (voltages).

my values on the meter with 20k setting
No buttons pressed 3.9v
ch+ pressed 2.66v
ch- pressed 1.82v
vol+ pressed 1.08v
vol- pressed 0.37v
mode pressed 3.39v

customaudioman

so since my resistive wire is under 5v, I dont need to use any resistors on the wire. Make sure you have the right wire. 9.94v seems high

greenman100

I believe he's measuring resistance, because his buttons are not powered.

customaudioman

all the honda are the same

customaudioman

how is mine power and his is not? not understanding what you mean by that. by the way, how do you measure resistance? what setting on voltmeter do you use??

erie

greenman100 is right, I am measuring resisatance in ohms. Would I connect the REMG wire to ground? If so would it go like this: Ground>REMG REMC>3.7ohm>+5v Then the brain would just read the voltage from the divider?

customaudioman - My meter is set to 20k and so the values I listed are in ohms and not volts. I was hoping that I could get readings in volts and ditch the whole voltage divider thing, but my honda is not that cool. Also note that this a whole new generation of hondas so you cant expect that all the devices will work the same.

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greenman100

yes.

erie

thanks for all your help . . .I cant wait to get home.

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customaudioman

so then I might be wrong then, thats the same way I measure mine. Then mine must be in ohms also and not voltage? How do I get the voltage for the resistive wire when pressing the buttons then?

customaudioman

is the voltage the values whee looking for or ohms for the analogue inputs?

erie

The FB only reads voltage. If you are lucky enough to have voltage readings on your single "resitive" wire then all you need to do is make sure that the voltage coming out of your single "resitive" wire does not exceed 5v. If like mine, your meter is showing a resistance value (measured in ohms) then you will need to use a voltage divider to change the resistor values from your steering wheel controls into voltage that the FB can read.

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erie

OK So this is what I'm going to do. I would just like someone better at this than me to confirm this looks right.



On concern I have is that when I messaure the voltage after the 3.7k ohm resistor with just the 5.1v, my meter show 5.13v. If I messure before the resistor I get 5.14v. I thought that I'd have a greater drop than that. I've tried multiple resistors so it cant be a bad resistor.

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