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Wiring Wideband O2(LC1) on Pre-Vats car

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Old Apr 16, 2010 | 01:03 PM
  #1  
gsf-87IROC's Avatar
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From: Southern Indiana
Car: 87 IROC-Z
Engine: 383 HSR $8D
Transmission: T56
Axle/Gears: 3.42
Wiring Wideband O2(LC1) on Pre-Vats car

Have a 87 Camaro I'm planning on putting a Innovate LC1 onto this weekend.

I have read that voltage spikes are bad and you should not have it powered when the car is cranking.

Where can I get voltage that is hot when key on...off when in start, and on when running?

I have looked for a relay for the starter that would provide such a voltage...but can't figure it out on my Non-VATs car. Most posts I've seen refer to the VATs relay.

Any suggestions?

Thanks,
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Old Apr 17, 2010 | 07:47 AM
  #2  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Wiring Wideband O2(LC1) on Pre-Vats car

Originally Posted by gsf-87IROC
Where can I get voltage that is hot when key on...off when in start, and on when running?
,
Nowhere unless you use a relay controlled by the starter circuit as suggested in the Innovate instructions
Run key on power from suitable source through a 5 pin relay (wired NC ) that is opened by starter circuit.That will cut power to WB while cranking
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Old Apr 17, 2010 | 11:40 AM
  #3  
gsf-87IROC's Avatar
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From: Southern Indiana
Car: 87 IROC-Z
Engine: 383 HSR $8D
Transmission: T56
Axle/Gears: 3.42
Re: Wiring Wideband O2(LC1) on Pre-Vats car

Originally Posted by vetteoz
Nowhere unless you use a relay controlled by the starter circuit as suggested in the Innovate instructions
Run key on power from suitable source through a 5 pin relay (wired NC ) that is opened by starter circuit.That will cut power to WB while cranking
Actually, after reading the Service manual, found that I already have a power source with this 'feature'. So I'm going to run that to a relay to power the relay and run 12V from the batter to the relay(Norm Open). Should get me what I need. Some of the fuses are hot all the time...some are on only when in run. I happened to have run such a wire years ago for N20....but its laying unused right now. So that was a bonus.

I read the Innovate manual and it only said to run 12V to it with min 5 A fuse. No where did I see anything about a relay in it. I tried to go to the forum yesterday and it was down.
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Old Apr 19, 2010 | 09:48 AM
  #4  
NINÅ's Avatar
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Less Relays, Less Weight !

Yes there a circuits which are hot in run but not hot in start no relays required.

One of them is the wiper circuit.

You can tap into that circuit, add a fuse, and you’re good 2 go.


Happy Racing!



Spin Me This Week … I’ll Spin You Next Week
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