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Old 11-27-2007, 07:06 PM   #1
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Default How the wire a volt/AF gauge I got

http://cgi.ebay.com/ws/eBayISAPI.dll...m=250188674261

Ok, for the input ill use the wire from the LC-1. What should the input ground be? Just run a wire and ground it to the chassis?

Where should I get the 12V source from? And how should I ground that?
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Old 11-27-2007, 07:21 PM   #2
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If you have a seven-wire LC1, connect the voltmeter's signal ground to the LC1's green (analog ground) wire. If you have the six-wire version, connect it to the same ground point as the LC1's white (system ground) wire.

You should pull the meter's +12 and primary ground to the same places as the LC1's red (+12) and white (system ground) wires.
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Old 11-27-2007, 08:11 PM   #3
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Originally Posted by Joe Perez View Post
If you have a seven-wire LC1, connect the voltmeter's signal ground to the LC1's green (analog ground) wire. If you have the six-wire version, connect it to the same ground point as the LC1's white (system ground) wire.

You should pull the meter's +12 and primary ground to the same places as the LC1's red (+12) and white (system ground) wires.
will do!
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Old 11-27-2007, 10:21 PM   #4
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So you are going to use the 0-5V output of the LC-1? If so, any plans to mess with the signal so that the vm will display the numerical A/F ratio?
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Old 11-27-2007, 10:31 PM   #5
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So you are going to use the 0-5V output of the LC-1? If so, any plans to mess with the signal so that the vm will display the numerical A/F ratio?
That's what it does. You set it so that 0=10:1 5v=20:1 and it will display the numerical value. Might have the decimal in the wrong place but sometimes you can change that too.
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Old 11-27-2007, 10:42 PM   #6
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I thought it was 1V 10:1 and 2V 20:1??
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Old 11-27-2007, 11:01 PM   #7
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I thought it was 1V 10:1 and 2V 20:1??
Most WBO2 sensors are configurable, however the most common output mode is 0 to 5v. This is the default on the AEM and on Output 2 of the LC1 (output 1 being defaulted to NB emulation)

However I like your thinking. If you change the configuration to 10 = 1v and 20 = 2v then although you lose some resolution, the meter will display actual AFR (albeit with the decimal point in the wrong place)

RTM.
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Old 11-27-2007, 11:04 PM   #8
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that was *my* thinking, thank you very much. I also told him to get a voltmeter with adjustable decimal point (and even gave him a good ebay link), but he went with a different meter
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Old 11-28-2007, 12:17 AM   #9
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that was *my* thinking, thank you very much. I also told him to get a voltmeter with adjustable decimal point (and even gave him a good ebay link), but he went with a different meter
I got one with an adjustable decimal point, and yes it was your thinking. Hey, I got mine cheaper so thats why I went with it
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Old 11-28-2007, 10:33 AM   #10
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that was *my* thinking, thank you very much.
What, you think I can actually remember anything that happened outside of the current thread?
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