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Old 01-21-2003, 01:26 PM   #1
wkw
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Default resistor question (seat wiring question)

I am putting in some new Recaro seats soon and I have a question. Which resistor will stop signal coming from side airbag wiring? My new seats don't have side airbags and I don't want the airbag light to be constantly on.

bill
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Old 01-21-2003, 07:40 PM   #2
ResQDawg3
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Default Airbag light resistor mod

All right now, since we have a new forum to ask this type of question in.....I'll bring the topic back up......

I'm putting some new bucket seats in my car.....I don't want to stare at the airbag light, or have my dashboard looking like a Christmas tree. Nor, do I want to pull my dash apart to put a piece of electrical tape on the light or pull the light for that matter. I know that people have used these aftermarket adapter parts, that still needed fixing for them to install. I don't want to go that route either. From my understanding, you can fix this problem with a 3 ohm or 3k ohm resistor. I want to know how to do this one.

This topic has been started numerous times, but never finished. Everyone says that, "I'll let you know how it goes after I do it." Then noone ever posts the results! Hopefully, someone will reply to this and give us a difinitive answer. Thanks for listening, and look forward to the replies. Thanks in advance everyone......

Bill
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Old 01-22-2003, 02:46 AM   #3
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I would like to know also..
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Old 01-22-2003, 12:27 PM   #4
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It's a 3.3 ohm resistor that you place into the connector for the airbag you removed. If you use a 1/4 watt resistor you'll find it will slip into the connector just fine.

I did it over a year ago, it works perfectly.
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Old 01-22-2003, 12:28 PM   #5
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3.3 ohm is what you want.
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Old 01-22-2003, 01:27 PM   #6
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So it 3.3 ohm, and not the 3.3k ohm....Just wanting to make sure here......
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Old 01-22-2003, 01:34 PM   #7
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Quote:
Originally posted by ResQDawg3
So it 3.3 ohm, and not the 3.3k ohm....Just wanting to make sure here......
Yup. 3.3 Ohms works fine, if you use a 3.3K you'll get an ABS light.

This makes sense because when the airbag fires, you need a little power to ignite it. At 3.3 ohms, you get 4 amps of current, and about 50 watts of power.

If it was 3.3K the current flow would be only 4 milliamps, and the power available to set off the airbag only .05 of a watt, which wouldn't do anything in a hurry.
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Old 01-22-2003, 01:47 PM   #8
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FINALLY!!!! A difinitive answer to the question of the year! Thanks! I'll have to get to Radio Shack this weekend and pick some up!
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Old 01-22-2003, 06:58 PM   #9
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Alright, I have to know....Where did you get the resistors from? I can't seem to find anyone around here that sells them. The only one's they have are the 3.3k ohm ones.....Any suggestions?
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Old 01-22-2003, 11:10 PM   #10
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I got mine from ebay.

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Old 01-22-2003, 11:15 PM   #11
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3.3 ohm 1/4 watt is a standard value. Any electronics supply place will have them - at about a dime or so. Even Radio Shack only gets 5/$1 for their overpriced ones - though they may not have that value.

If all else fails, mail me a buck and I'll stuff a couple in an envelope.
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Old 01-23-2003, 02:17 AM   #12
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Is the it the same value resistor for the airbag in the steering wheel? Just want to make sure...
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Old 01-23-2003, 02:26 AM   #13
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Yup it's the same value for ALL the airbags in the WRX. I think it's actually supposed to be 3 ohms even, but 3.3 is a standard value and close enough to do the job. You can find this info on Page AB-16 of the body manual, if you need to look it up.

A couple of things to remember - IF you have an accident, you're losing some protection. And also if the SRS sytem triggers, it's gonna put 12 volt pulse into that little resistor, and the resistor will probably burn out , perhaps with some smoke and heat - though not much as it's a little 1/4 watt - probably just a "pop" and some smoke. It'll be a lot less damage and cost than the airbag, but won't protect you as well.
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Old 01-23-2003, 03:02 AM   #14
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Thanks for all the info..
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Old 01-23-2003, 08:58 AM   #15
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AFAIK the firing voltage is higher than 12V, as a safety measure, although that's not important here.
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Old 01-23-2003, 11:04 AM   #16
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Alan, you have PM.
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Old 01-23-2003, 01:35 PM   #17
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Question

Do you guys know of a way to use a switch to disable the airbags, but keep the airbag warning light on while they are disabled? I have my abs set up this way, but I thought that I saw that the air bag system is somehow connected to the ignition system in the manuals; so I'm not sure it would work.
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Old 01-23-2003, 01:49 PM   #18
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Quote:
Originally posted by PeterJ
Do you guys know of a way to use a switch to disable the airbags, but keep the airbag warning light on while they are disabled? I have my abs set up this way, but I thought that I saw that the air bag system is somehow connected to the ignition system in the manuals; so I'm not sure it would work.
While it could be done, you'd be risking some pretty severe problems in that the switching and wiring could cause an inadvertant air bag deployment. I'd really think it would be a bad idea to do this while driving, or even when the car was on.

And you'd definately not want to try and just switch it using a jumpered fuse, as the SRS stores power, and could still fire even if the fuse were disabled and the SRS light was on.

Remember that we ARE dealing with explosives here. As well as safety equipment. Now I'll admit that I have disabled MY car's driver's airbags because I believe that the risks of injury to me are greater from them than the safety benefits given that I always use a seat belt. But that's my choice, and it may even be wrong, but I am happier driving without explosives facing me. I won't let anyone drive my car because of this. I'd be liable for legal damages if anyone were injured.
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Old 01-24-2003, 09:02 AM   #19
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here are some places to get all kinds of electronics parts ...resistors transistors capacitors and so on


www.bdent.com B&D enterprises
www.imcm.com MCM electronics

all i can think of right now hope this helps you guys that are trying to find components
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Old 01-24-2003, 05:56 PM   #20
Jon [in CT]
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Default Re: Airbag Cutoff Switches

Subaru actually sells and installs airbag cutoff switch kits for 2001 and older Imprezas with airbags. See:
http://Jon.in.CT.home.att.net/17-05-01.pdf
Note: I intentionally omitted the forms that are a part of this TSB since they aren't germane to this discussion.

One can research prices for the various part numbers mentioned in that TSB at http://www.subaruparts.com and find that list price is around $300.

I guess these kits are more than just a switch.

Last edited by Jon [in CT]; 01-24-2003 at 06:16 PM.
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Old 11-16-2003, 08:25 PM   #21
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Because I had a hard time finding these, I figured I would post where I did

http://www.futurlec.com/Res14W.shtml

I actully haven't orded any from here, however, you can, which was better off then I was before
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Old 11-16-2003, 08:28 PM   #22
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Correct link for MCM electronics-
www.mcmelectronics.com
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Old 11-16-2003, 09:53 PM   #23
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Would this work the same if i put some STi seats in a '02 are the plugs the same??
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Old 12-11-2003, 06:47 AM   #24
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woohoo, I just installed some Recaro SRDs and knew the search function would actually come through for me. 3 pages deep and BINGO. Thank you all for your contributions, it has saved me quite a bit of time.

Odd question, there are 2 wires. So I just put in one end of the resistor in each wire opening. Does polarity matter?
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Old 12-11-2003, 02:14 PM   #25
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Default Polarity

ECS: Nope. Just jam those resitors in there and you are all set!

I stuck my resistors into the connector, wrapped it up in electrical tape, and I've been good to go for the last 7k or so.
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