99 ex engine harness into 97 cx hatch?

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Feb 11, 2004 | 12:24 PM

pootie.teng

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From: san jose, Ca, USA

99 ex engine harness into 97 cx hatch?

yo people i was wondering in order to make the swap easier without wiring problems can i just use a 99 civic ex engine harness in my 97 cx hatch. will this work. since the ex harness is already rigged for vtec.

Feb 11, 2004 | 01:23 PM

vtecb20coupe

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Joined: Nov 2003

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From: blah

Re: 99 ex engine harness into 97 cx hatch? (teckno_geek)

you can use it but will need the si obd2 ecu, unless you plan on converting to obd1.

Feb 11, 2004 | 02:12 PM

pootie.teng

Thread Starter

Junior Member

Joined: Oct 2003

Posts: 516

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From: san jose, Ca, USA

Re: 99 ex engine harness into 97 cx hatch? (vtecb20coupe)

yea i'm going to go obd1 p28 ecu. so it'll be cool and everything should plug up rite...

Feb 11, 2004 | 02:18 PM

95 LS

Joined: Apr 2002

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From: San Antonio

Re: 99 ex engine harness into 97 cx hatch? (teckno_geek)

Yeah but the 99 ex harness is obd2b. It would be less of a pain to use a 96-98obd2 ex harness instead of a 99-00 ex harness

Feb 12, 2004 | 01:16 AM

VTECVillain

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Re: 99 ex engine harness into 97 cx hatch? (teckno_geek)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">yo people i was wondering in order to make the swap easier without wiring problems can i just use a 99 civic ex engine harness in my 97 cx hatch. will this work. since the ex harness is already rigged for vtec.</TD></TR></TABLE>

It will not work unless you want to do a decent amount of rewiring. Not only are the plugs slightly different but most of the pinouts are also. You need to reuse your stock harness or get a 96-98 EX harness.