Camaro steering wheel with paddle shifters?

[DevilSonic89]

Would the paddles work on the sonic if u switched out the steering wheels???

 

[Swordsmith]

There would be substantial rewiring to do but I don't see why, in theory, it wouldn't be possible to make this work.

Of course the first thing you'd need to do would be to make sure your car only has two pedals.

 

[DevilSonic89]

lol i have the automatic.

 

[vento]

It is theoretically possible, but it isnt worth the hassle.

I did alot of research into this, and essentially the problem you have is in the camaro the body module is looking for different voltages compared to that of the sonic.

Here are the schematics below. The K9 Body control module is the same in both vehicles. Both cares measure resistance along a coded ground to engage a gear change.

The sonic uses 3 resistors wired in parallel, and clicking the shifter switch bypasses a resistor signaling an upshift or downshift via a change in the wire's resistance.

The Camaro uses two switches wired in parallel (I believe), where an upshift is determined by an increase in resistance, and a down shift by a drop in resistance.

Sonic:

Camaro:

To get it to work would require reprogramming the control module to react to a different voltage change, or wiring in a separate control module before the OEM one to translate the signal into the resistance the stock one is looking for.

 

[sx sonic]

It is theoretically possible, but it isnt worth the hassle.

I did alot of research into this, and essentially the problem you have is in the camaro the body module is looking for different voltages compared to that of the sonic.

Here are the schematics below. The K9 Body control module is the same in both vehicles. Both cares measure resistance along a coded ground to engage a gear change.

The sonic uses 3 resistors wired in parallel, and clicking the shifter switch bypasses a resistor signaling an upshift or downshift via a change in the wire's resistance.

The Camaro uses two switches wired in parallel (I believe), where an upshift is determined by an increase in resistance, and a down shift by a drop in resistance.


To get it to work would require reprogramming the control module to react to a different voltage change, or wiring in a separate control module before the OEM one to translate the signal into the resistance the stock one is looking for.

This is what I was thinking, albeit in a much more vague and general manner.

Sounds like you could have yourself a nice little side job making a retrofit

 

[vento]

This is what I was thinking, albeit in a much more vague and general manner.

Sounds like you could have yourself a nice little side job making a retrofit

Ive been thinking about it, I wish I could have pulled the shifter assembley out of my 1.8 to see how it's wired up before they totaled it.

Looking at the schematic again made me realize that the modules should actually be looking for the same resistance. Since on the camaro the upshift will follow the path of least resistance along the 634ohm resistor.

So it should be very possible, but you would have to pull the shifter apart to figure out how to wire it.

 

[SabreXray]

Have you had a paddle shift steering wheel before? My Fit had one and besides the novelty of it, I never used it.

 

[Swordsmith]

How much would it really cost to get a "translator" control module built. Sounds like something you could build on a breadboard with $1.80 worth of parts out of a Fry's electronics (or even, shudder, Radioshack) or if its really more complicated than it sounds, an Arduino. You've only got a couple inputs and a couple outputs, and they aren't digital or anything, they're just On/Off. Sure, the voltage is different and the type of input and output don't agree, but that doesn't mean it's hard.

 

[Maddmatts]

Based on the schematics and what I remember for calculating series/parallel circuits:
Sonic Upshift: 634ohms
Sonic Downshift: 2004ohms
Sonic No-command: 6124ohms

Camaro Upshift: 568.363ohms
Camaro Downshift: 1370ohms
Camaro No-command: 5490ohms

At the most, all you'd need to do is bump up the ohm value for each signal somehow. They're close enough that it's possible they might work regardless. In either case, it might not even harm anything to try. I'm betting that the programming is looking for values that pass certain thresholds rather than meeting specific values. Resistors have tolerances and I doubt GM is paying someone to go through piles of resistors to find the ones that are perfectly 634 ohms. Although it would explain their previous financial difficulties.

Edit: Add a 66ohm resistor to the ground wire and add a 568ohm resistor between pin 3 of the right switch and pin 2 of the left switch and bingo-bango-bongo, you're good to go.

 

[civickiller]

i really hope this works. im gonna try it.

 

[ZehOrtigoza]

Anyone had tryed?

 

[civickiller]

i am now a studying to be a mechanic and once i get the cash to buy a steering wheel i will be attempting this mod...

 

[blasirl]

It is theoretically possible, but it isnt worth the hassle.

I did alot of research into this, and essentially the problem you have is in the camaro the body module is looking for different voltages compared to that of the sonic.

Here are the schematics below. The K9 Body control module is the same in both vehicles. Both cares measure resistance along a coded ground to engage a gear change.

The sonic uses 3 resistors wired in parallel, and clicking the shifter switch bypasses a resistor signaling an upshift or downshift via a change in the wire's resistance.

The Camaro uses two switches wired in parallel (I believe), where an upshift is determined by an increase in resistance, and a down shift by a drop in resistance.

Sonic:

Camaro:

To get it to work would require reprogramming the control module to react to a different voltage change, or wiring in a separate control module before the OEM one to translate the signal into the resistance the stock one is looking for.

Do you or does anyone else on the forum have these pictures?

Based on the schematics and what I remember for calculating series/parallel circuits:
Sonic Upshift: 634ohms
Sonic Downshift: 2004ohms
Sonic No-command: 6124ohms

Camaro Upshift: 568.363ohms
Camaro Downshift: 1370ohms
Camaro No-command: 5490ohms

At the most, all you'd need to do is bump up the ohm value for each signal somehow. They're close enough that it's possible they might work regardless. In either case, it might not even harm anything to try. I'm betting that the programming is looking for values that pass certain thresholds rather than meeting specific values. Resistors have tolerances and I doubt GM is paying someone to go through piles of resistors to find the ones that are perfectly 634 ohms. Although it would explain their previous financial difficulties.

Edit: Add a 66ohm resistor to the ground wire and add a 568ohm resistor between pin 3 of the right switch and pin 2 of the left switch and bingo-bango-bongo, you're good to go.

Would you be willing to elaborate on this some more? Maybe a sketch?

i really hope this works. im gonna try it.

Did you ever try this?


thanks all

 

[cwhaiyan]

Been tried and done many times
https://r.tapatalk.com/shareLink/to...&share_fid=38994&share_type=t&link_source=app

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