wiring vtec with OBD2->OBD1 converstion harness
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wiring vtec with OBD2->OBD1 converstion harness
hey honda members,
My build is almost finished and last thing to do is to wire in vtec on my ls/vtec.
The car is supossedly a 95 but it has a obd2 harness so i dont know what the deal is, but the original owner did use a xencron tuning wireing harness to convert to obd1.
so my question is, how to i wire vtec to my new p28 ecu when the wiring harness uses different plugs for obd2 and 1. the xencron harness fills up slot 4in my ecu so i cant just bypass this and plug directly in? any help would be apreciated, if u need pics let me know and i can have them up,
i really want to get this thing running!
My build is almost finished and last thing to do is to wire in vtec on my ls/vtec.
The car is supossedly a 95 but it has a obd2 harness so i dont know what the deal is, but the original owner did use a xencron tuning wireing harness to convert to obd1.
so my question is, how to i wire vtec to my new p28 ecu when the wiring harness uses different plugs for obd2 and 1. the xencron harness fills up slot 4in my ecu so i cant just bypass this and plug directly in? any help would be apreciated, if u need pics let me know and i can have them up,
i really want to get this thing running!
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Re: wiring vtec with OBD2->OBD1 converstion harness
here are some pictures of what im working with:
http://s904.photobucket.com/albums/ac247/JDMjackyboy/
So i know im supposed to have the vtec solenoid connected to a4 on the p28 ecu but since there is a wire there i dont know what to do? im not running a vtec pressure switch becuase im using a jdm solenoid and jdm gsr head. let me know what you think i need to do, thanks in advance!
-jack
http://s904.photobucket.com/albums/ac247/JDMjackyboy/
So i know im supposed to have the vtec solenoid connected to a4 on the p28 ecu but since there is a wire there i dont know what to do? im not running a vtec pressure switch becuase im using a jdm solenoid and jdm gsr head. let me know what you think i need to do, thanks in advance!
-jack
#3
Re: wiring vtec with OBD2->OBD1 converstion harness
I would like to know this to, but just off the top of my head. shouldent there be a open slot in the obd2 side of the harness so thats where you would plug it in and the harness its self would convert it into obd1 on the ecu?
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Re: wiring vtec with OBD2->OBD1 converstion harness
Some jumpers come with VTEC/knock/IAB/02 as wires attached to the harness so you can connect directly. If not u can tap the obd2 or obd1 side of the harness if there is already a wire there or depin it and repin with your harness you make.
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Re: wiring vtec with OBD2->OBD1 converstion harness
so the harness i belive does come with it and the obd1 side has a wire pluged into the vtec soleinoid spot, AND on the obd2 side there is the green/yellow wire for vtec, but there is absolutly no plug in the engine bay, so i cut into the wire and ran a wire to the vtec solenoid but still no vtec... i dont know whats the problem, the ecu was programed to not check for oil pressure before engaging vtec cause using a jdm vtec solenoid, can anyone help?
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Re: wiring vtec with OBD2->OBD1 converstion harness
and no becuase i guess the obd2b wireing harness already has a wire for vtec, its like there used to be a vtec motor in the car and it was made into a ls, but so i just cut the wire as it came out of the obd2 side of the ecu idk where the rest of the wire is going, i think that has to be my problem, any ideas?
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