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Explain this to me in layman's terms?

MultiBros
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I'm currently working on putting custom seats in my Saab; Currently I'm struggling with figuring out how to "cancel" the seat airbag, and disable the seat's occupancy sensor.

 

Now, I think I have an idea as to how I'd cancel the seat airbag, it seems that I'd want to connect a 3.3 ohm resistor to a 1 amp fuse. Here's a similar system made by someone else for their Subaru. Then I'd just cut the male connector and solder it to the connector. It should be fine to just set it and forget it then.

 

The tricky part now, is disabling the seat's occupancy sensor. I found a different post here that says "If you want to completely deactivate the warning, you could just solder a diode to a male plug and be done with it. Just plug it in and tuck the dangling (unplugged) sensor cable under the seat.". But I just don't know what kind of diode I'd need, and I'm also unsure if that's really all it takes.

 

I know this isn't an automotive forum by any means, but I thought you guys might have a better understanding of all of this than I would.

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You can always just disconnect the battery of the car, turn a light on to drain residual power, wait a bit, check for a capacitor in the crash defection system, it should have discharged but you should check with a DMM/Fluke anyway. Then it should have no power to actually deploy. You can then remove the airbag and sensor array. 

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2 minutes ago, Imbadatnames said:

You can always just disconnect the battery of the car, turn a light on to drain residual power, wait a bit, check for a capacitor in the crash defection system, it should have discharged but you should check with a DMM/Fluke anyway. Then it should have no power to actually deploy. You can then remove the airbag and sensor array. 

right, of course I'll have to disconnect the battery and remove the airbag. the issue is that I'll have an srs failure on my dash then, and all the other airbags will lose function. I only want to lose the seat airbags, not the entire system

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3 minutes ago, MultiBros said:

right, of course I'll have to disconnect the battery and remove the airbag. the issue is that I'll have an srs failure on my dash then, and all the other airbags will lose function. I only want to lose the seat airbags, not the entire system

You can always disconnect the LED on the dash? 
 

I’d have to look at the full circuitry but I would imagine that just removing the actual airbag shouldn’t cause an issue as it should only receive power when the crash detection circuit is engaged.

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Just now, Imbadatnames said:

You can always disconnect the LED on the dash? 

sorry, I might not be making sense. If the system detects a break in the system I'll loose all the airbags (dash, curtain, knees, etc.). I only want to disable what's necessary to disable which are the airbags located inside of the seat bolsters. Hence the need to trick the system into thinking the airbags are still present

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And you're asking this on a PC tech forum rather than the Saab forums because?

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9 minutes ago, MultiBros said:

sorry, I might not be making sense. If the system detects a break in the system I'll loose all the airbags (dash, curtain, knees, etc.). I only want to disable what's necessary to disable which are the airbags located inside of the seat bolsters. Hence the need to trick the system into thinking the airbags are still present

Personally I would remove the entire system that’s connecting the ones you’re removing from the main crash detection system. From my limited knowledge of the systems missing an airbag wouldn’t cause the rest to blow as it’s triggered by other elements in the system. 

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11 minutes ago, Dedayog said:

And you're asking this on a PC tech forum rather than the Saab forums because?

Yeah, I'd find a Saab forum because this is a safety issue, not just installing RGB.

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13 minutes ago, Dedayog said:

And you're asking this on a PC tech forum rather than the Saab forums because?

because this is more of a technical wiring related question, not so much a question that has to do with changing a valve cover gasket.

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2 minutes ago, ToboRobot said:

Yeah, I'd find a Saab forum because this is a safety issue, not just installing RGB.

trust me, I've tried. this hasn't been done before in a Saab; or at least the few times it has been done the documentation of it has been between sparse and nonexistent

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2 hours ago, MultiBros said:

because this is more of a technical wiring related question, not so much a question that has to do with changing a valve cover gasket.

You need someone familiar with a Saab's wiring and safety features, not people who can wire a home network or build a PC with a swiss army nice.

 

Saab forums must be lacking, G35 forums were rife with information like this.  Even pointed to local mechanics who could do the work.

 

2 hours ago, MultiBros said:

trust me, I've tried. this hasn't been done before in a Saab; or at least the few times it has been done the documentation of it has been between sparse and nonexistent

Again, how are tech geeks going to know how to bypass Saab's safety features?  We'd be googling just like you.

 

That said, an SAE Certified Mechanic who works on Saabs would know this stuff.  He'd have to fix it if a solenoid went bad, for example. 

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