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obd2a engine swap in obd2b car. no tach signal to gauge.

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Old Aug 12, 2007 | 02:27 PM
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Default obd2a engine swap in obd2b car. no tach signal to gauge.

i've searched over and over and either there is nothing to help me or i really suck at the search...

anyways. i have a obd2b 01 integra type r and have recently put a obd2a jdm type r swap in it. i have converted the harness from obd2b to obd2a so it uses the jdm ecu in it. i have added the rpm siignal wire to my stock engine wiring harness and deleted what was not being used.

as resources i have used alldatapro wiring schematics and can only find obd2a schematics in there.

so the car starts, runs fine, no check engine codes, no dtc's. i droveit and everything and it engages vtec without a problem at all. the only thing leftis that i do not have rpm signal to my gauges so im stumped on that.

like i said before i added the rpm signal wire to my engine harness and ran it to the right pin in the right connector (127) on the left hand side of the engine bay but still have no signal. i was wondering if anyone had access to the wiring harness schematics for the obd2b main harness of the car or know what pin, wire color code on the main harness that is used for rpm signal to the gauges.

thanks in advance,
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Old Aug 13, 2007 | 06:21 AM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (eviltwin)

pretty much what i need is the pin out reading of the main harness connector that connects to the 127 engine harness connector for a obd2b integra so i can see which pin on that main harness connector is used for tach signal to the cluster.


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Old Aug 13, 2007 | 09:49 AM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (eviltwin)

take a peek at my OBD2b wiring schematics page here:
http://www.ff-squad.com/technet/wiring.obd2b.htm

hth's
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Old Aug 16, 2007 | 07:18 AM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (Katman)

thanks katman... good link, unfortunately it leaves me wherei am currently at. whati really need is the 0bd2b integra main harness schematics... all connectors on the main harness. thanks for you help though...
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Old Aug 16, 2007 | 09:18 AM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (eviltwin)

ur..blue...wie...on...ur...dizzy.....probably...do esnt...pin....right.
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Old Aug 16, 2007 | 07:11 PM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (killacam661)

yea i know that already, what im trying to find out is which wire is the tach signal pinned to on the main harness i beleive 302 connector on the driver side. the plug with the blue rpm signal wire from the tach is connector 127 it plugs into connector 302. connector 302 sends the signal to the tachometer.

my question is if anyone knows what wire on the 302 connector is the tach sginal wire.
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Old Aug 16, 2007 | 09:21 PM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (eviltwin)

here, get an account on the site linked below and you can download the full Helms manual (in PDF) for your vehicle:

http://www.hondahookup.com/manuals


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Old Aug 17, 2007 | 06:52 AM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (Katman)

oh man look at all that access to all those manuals.... katman... thats exactly what i needed.. thanks homie
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Old Aug 17, 2007 | 10:11 PM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (eviltwin)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eviltwin &raquo;</TD></TR><TR><TD CLASS="quote">oh man look at all that access to all those manuals.... katman... thats exactly what i needed.. thanks homie </TD></TR></TABLE>


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Old Feb 18, 2008 | 02:26 AM
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Default Re: obd2a engine swap in obd2b car. no tach signal to gauge. (eviltwin)

im new to this site and was tryin to see if one of the items you posted for sale was still available. i tried to reply to the post but it wouldnt let me and it wouldnt let me im u either. anyways the item is the b series ac bracket with tensioner. if u would let me know id appreciate it.
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