OBD1 conversion vtec wiring help

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Old Mar 30, 2006 | 05:57 AM
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Default OBD1 conversion vtec wiring help

Ok the instuctions with the OBD1 conversion are kinda vague. They just tell the name of the plug and what wire to use. I don't know the name of the plugs so I don't know what goes where.

There is a black plug that comes off the vtec solenoid, what goes there/what is this called? There is only one connector inside.

Then there is the green plug that I assume is the oil pressure. There are two connectors inside.

Now there are only 2 wires that say they go to vtec, so whats the deal with the three connections.
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Old Mar 31, 2006 | 03:57 PM
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Default Re: OBD1 conversion vtec wiring help (Concept Tuning)

the black plug is the oil pressure plug..the green one is a vtec solenoid plug
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Old Apr 2, 2006 | 11:37 PM
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Default Re: OBD1 conversion vtec wiring help (Concept Tuning)

VTEC SOLENOID-BLACK PLUG- 1 WIRE -----> A4 on ECU

VTEC OIL PRESSURE-GREEN PLUG- 2 WIRES------> (blue wire to D6 on ECU)
(black wire to ground)
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Old Apr 3, 2006 | 06:55 AM
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Default Re: OBD1 conversion vtec wiring help (ALLMOTORCRX20)

Anyone else want to chime in? These guys are telling me two different things.
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Old Apr 3, 2006 | 12:34 PM
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Default Re: OBD1 conversion vtec wiring help (ALLMOTORCRX20)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ALLMOTORCRX20 &raquo;</TD></TR><TR><TD CLASS="quote">VTEC SOLENOID-BLACK PLUG- 1 WIRE -----&gt; A4 on ECU

VTEC OIL PRESSURE-GREEN PLUG- 2 WIRES------&gt; (blue wire to D6 on ECU)
(black wire to ground)</TD></TR></TABLE>

correct
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Old Apr 3, 2006 | 02:01 PM
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Default Re: OBD1 conversion vtec wiring help (droppedcrxsi)

Thanks!

Ok now one more question. I have a 4 wire O2 coming in. On the conversion harness it says only two of the wires go to the O2 sensor though, so what about the other two wires?
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Old Apr 3, 2006 | 09:09 PM
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Default Re: OBD1 conversion vtec wiring help (Concept Tuning)

the 4 wire o2 is easy
-signal (you can use the stock wire)
-ground

the 2 wire that are the same can interchange...

-heater A6 (obd1)

-12V+
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Old Apr 4, 2006 | 06:49 AM
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Default Re: OBD1 conversion vtec wiring help (droppedcrxsi)

Ok I'm confused.

So one is a ground

One I just use the wire from my 1 wire O2?

One is heater and 12v+ which is what the conversion harness connects to?
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Old Apr 4, 2006 | 02:10 PM
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Default Re: OBD1 conversion vtec wiring help (Concept Tuning)

Give me more info, what ecu jumper do u have, and what colors are on your o2...
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Old Apr 4, 2006 | 04:34 PM
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Default Re: OBD1 conversion vtec wiring help (droppedcrxsi)

I have the ECU jumper I got from eGay. I talked to you before about the dizzy wiring and you said it was the same way you did yours.

I havn't got the O2 yet. Should be coming in Friday. Trying to get eveything ready so I can get it done quick and cleanly without any problems.
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Old Apr 4, 2006 | 09:03 PM
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Default Re: OBD1 conversion vtec wiring help (Concept Tuning)

ok, just post up the o2 colors, and I will try and do a how to for ya
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Old Apr 10, 2006 | 10:37 PM
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Default Re: OBD1 conversion vtec wiring help (Concept Tuning)

You probably bought the same obd-0 to obd-1 conversion harness that I bought on ebay. If im right, I feel bad for you. The instructions that guy put were messed up and he didnt even pin one of the wires correctly. I had to troubleshoot it to get it right. Here is some info that might be of some use to you.

There are 4 wires on the oxygen sensor itself

WHITE
GREEN
BLACK
BLACK

There are 4 wires going from the harness to the sensor

WHITE
GREEN
YELLOW
ORANGE

The way the colors go are

WHITE-----&gt;WHITE This is signal, A14 or D14 on ECU
GREEN-----&gt;GREEN Ground
YELLOW----&gt;BLACK 12 Volts
ORANGE----&gt;BLACK I think this one is 12 Volts too

on the plug, i believe they go

(clip)
WHITE ---- GREEN
YELLOW ---- ORANGE
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Old Apr 11, 2006 | 05:20 AM
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Default Re: OBD1 conversion vtec wiring help (ALLMOTORCRX20)

^ ummm no the one I bought only has two wires to the O2. It also had good instructions, however some of the stuff it named I didn't know the difference. I would have bought a Rywire, but this guy copied his and sold it for $45 shipped.

Anyways, I will post of pics of the O2 later. I can't get my old one out of my header now. Go figure the one wrench I need (22mm) is the only one I can't find.
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Old Apr 12, 2006 | 10:14 PM
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Default Re: OBD1 conversion vtec wiring help (Concept Tuning)

I bought mine for 45 bucks too on ebay. I think its the same one. You can also use the 7/8 wrench to take off the oxygen sensor, that's the one i use.

Try and scan the instructions and post them here and i will try and help you out. Also, take a picture of the conversion harness.
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Old Apr 13, 2006 | 12:08 PM
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Default Re: OBD1 conversion vtec wiring help (ALLMOTORCRX20)

I got the O2 wiring done, thanks to Rywire Also gave me a killer deal on some plugs, thanks man.

I'm not getting any codes. Not sure if I have the temp vtec wired up right. Didn't feel it or hear it.

The car doesn't smoke or anything like it does when I was still running the PM6. It is a hella-of-a-lot faster too. Now next issue....handling (see other thread)
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