Need OBD2A to OBD1 wiring chart/excel doc. *Pics of my Harness!*
 

*very good iacv info*

http://honda-tech.com/zerothread?id=1055268&page=1

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pics of the harness i made, the tube is the left over wires, iam not going to cut them till iam completely done.
http://www.biggmike.net/ecu1.JPG
http://www.biggmike.net/ecu2.JPG
http://www.biggmike.net/ecu3.JPG
http://www.biggmike.net/ecu4.JPG

random work pics, old servers until we get the beasts.
http://www.biggmike.net/work.JPG

*update*
iam buying a y8 intake manifold, throttle body and iacv so i can conver to 2 wire iacv. ill update when i get it done.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *already use the shitty search*
 

please help me iam going through all of engine management manually :----:

Re:Need OBD2A to OBD1 wiring chart/excel doc. *already use the shitty search*
 

This helped me but its not complete. http://www.turbod16.com/viewtopic.php?t=3572

Re:Need OBD2A to OBD1 wiring chart/excel doc. *already use the shitty search*
 

<---on page 8 of engine management
yeah i have those but there is a excel type chart that has it made easy. i have the charts u posted.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *FOUND IT THANK YOU*
 

Re:Need OBD2A to OBD1 wiring chart/excel doc. *FOUND IT THANK YOU*
 

Woah, glad I don't have to do that :o

Good luck ;)

Re:Need OBD2A to OBD1 wiring chart/excel doc. *FOUND IT THANK YOU*
 

if for some reason i fail there is always www.jdmshit.com

Re:Need OBD2A to OBD1 wiring chart/excel doc. *FOUND IT THANK YOU*
 

I went the JDMshit way because its not worth the headache to me for $85. Post pics when you are done.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

*update* ;D

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

what are you asking? if you need the actual 'plug' to do the iacv conversion? you can ghetto rig it just as long as the wires touch the corresponding pins on the female side of the sensor. or you can use one of the 2 pin obd1 iat sensor plugs also, just make sure the wires correspond b/c they will be different colors than the example given in the diagram.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

can i just cut the orange wire?

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

the plugs are totally different shapes, it would never fit on a 2p iacv

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

ok i have a 96 civic with the stock d16y7 and want to convert it to obd1. so i need to go pull a 2plug iacv out the junkyard to replace my 3 plug iacv?

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

right, i believe all obd1 iacv's were 2p. i have one laying around, but i don't have the plug harness for it :-\

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

if anyone else could verify this it would be AWESOME.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

i'm 101.5% sure you need a 2p iacv, so if you don't have one, yes you need one. i'm only 98% sure that all obd1 iacv's were 2p though ;)

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

my IACV looks like this do they make this type in OBD1?
mine
http://www.hondaautomotiveparts.com/...13S030_D03.gif
obd1
http://www.hondaautomotiveparts.com/...13SR30_D03.gif

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

no, not the 3p, you HAVE TO CONVERT TO A 2P IACV WHEN SWAPPING TO OBD1. i'll give you one for 10 bucks shipped.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

how do i convert the mounting is totally different. figure it out and u got ur self a deal.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

i just noticed it's for a y7, i believe you have to use the y8 im :P

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

are there anyother options. if not i can use the 92-95 IM right? if so whats the best? off the ex/si?

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

yeah, i have a whole intake manifold actually with that iacv. i don't know what d series it's off of, but i believe it says 'hf' stamped on it (i know it's not from an hf, but that's what's stamped on it). if you want it, i'll sell it to you with the iacv (the correct one) for 15 bucks plus shipping.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

pics mang so someone can tell me which one it is and i will buy it quicker

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

ok, i'll take pics tonight and get them to you tomorrow.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

thanks dude ur my hero

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

Mike I have done the whole IAC conversion and I used the Y8 intake and Y8 IAC on the intake. You also have to have a non IAC mounted TB or you will have to plug the feed hole to the valve.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

so what your saying is i need a y8(automatic) intake manifold and IACV or i can use a 92-95 intake manifold and IACV?

i believe this is the automatic y8 one, correct? where the IACV is seperate?
http://www.hondaautomotiveparts.com/...S020_D0410.gif

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

No you need one for a stick. Auto is on the TB.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

why can i use the y8 IACV and not the y7. they both are 3wire correct?

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

update

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

you either need a 96-00 ex, or a 96-00 hx (manual only) manifold to stay with an obd2 manifold. but you can use any obd1 d series intake manifold that i'm aware of. the one i have that i told you about, i don't believe it's from an ex or si, but it has the 2p iacv. i forgot to get pictures, i'll try to remember today. i know it will work and all of your other plugs should match right up, except for the iat, it's on the intake runners on obd1 and in the intake pipe on obd2, so you just leave the one on an obd1 manifold as is and don't use it. this should really be in teh tech section :-\

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

helpful links for y7 to y8 intake manifold conversion.
http://www.honda-tech.com/zerothread?id=1040235
http://www.honda-tech.com/zerothread?id=575002
http://honda-tech.com/zerothread?id=717086
http://web.archive.org/web/200403011...99/Y8maniswap/
http://technet.ff-squad.com/

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

can i use my old y7 ecu to run the y8 2wire iacv or is it incompatible too? i want to be able to go between obd2a and obd1. is this possible being the y8 iacv is 2 wire and the y7 iacv is 3?

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

i highly doubt it, you could, but will just get an iacv cel and a fucked up idle. why would you want to go back to using an obd2 ecu? just get a virgin p06 if you want to run stock again.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

your one smart man projekteg. i wasnt thinking simple after all this complex thinking. i can just get an extra eeprom chip with stock bin. anyone mess with the 512k chips with the switch were u can have two bins on one chip and have a switch. ive seen people mention it before but never heard of someone putting it to use.

iam going home for lunch to grab the laptop and will have u some pictures in less than an hour.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

na dawg, all you have to do is put a switched jumper at j10, by cutting the jumper, it will enable the stock rom, so you can just extend and actual jumper wire to outside of the ecu and put a toggle switch in line. when the circuit is closed, you'll be running off the programmed rom, when it's open (disabled jumper), you'll be running stock rom from the ecu, simple as pie ;)

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

i love you projekteg. ur so smart. iam grubbing down so you will have pictures of the laptop as soon as iam done.

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

good, i'm sick of running in my house burning roms, me have no lap top at all :'(

Re:Need OBD2A to OBD1 wiring chart/excel doc. *UPDATE: Finished Harness!!!!*
 

sold! send me pm i was almost like damn, then i saw the usb port in the last pic ;)

Re:Need OBD2A to OBD1 wiring chart/excel doc. *Pics of my Harness!*
 

update with pics ;D