wires that go to engine bay

andy

hi guys ,i want to convert to obd1 but havent converted to mpfi ,now the ? is what do i do first ,convert to obd1 then mpfi or the other way around first mpfi then obd1,
i need  a lil help guys please HELP!

.i would do MPFI first, then OBD1 conversion, probaly better.

.cool  thanks Green 91  BTW:  on the obd0 to obd1 conversion harness there are some wires set up to go into the engine bay these wires connect to what

.when you convert to obd1 you will have a few wires left they are for the vtec pressure switch, vtec solenoid, and o2 sensor you have to make a subharness for these there will be 5-6 wires that will need to be run. i would do everything at once convert to mpfi and 0bd1 at the same time you will need obd1 distributor and injectors 4wire o2 sensor along with an ecu if you use the obd1 injectors you wont need to use a resistor box for the mpfi conversion you will only need to run another 5-6 wires for the cylinder posistion sensor and the extra injectors when you convert to mpfi you have rewire the plugs on the ecu anyway so if you get some obd1 ecu plugs you can solder those plugs onto your obd0 harness in the correct locations its not hard it may take awhile but its not hard at all...

click the link this is what i used when i did my obd1 conversion...

from : localhost/www.pgmfi.org/twiki/bin/view/...KurtsOBD0-OBD1

.[QUOTE=stolle]you have rewire the plugs on the ecu anyway[/qoute]
ok so  to wire the 4 injectors to convert to mpfi  on a p28 ecu it's the same pins B10  B12  A3  A7   and C1 C2  for CPS?
so if you get some obd1 ecu plugs you can solder those plugs onto your obd0 harness in the correct locations its not hard it may take awhile but its not hard at all.

i don't get it

.just a suggestion for the future... you might get better responses  for these kind of tech questions in the Interior / Audio / Electronics Tech section.

.
Originally Posted by Millhouse609just a suggestion for the future... you might get better responses  for these kind of tech questions in the Interior / Audio / Electronics Tech section.
ok thanks!! but can someone please correct me on this ok so to wire the 4 injectors to convert to mpfi on a p28 ecu it's the same pins B10 B12 A3 A7 and C1 C2 for CPS?
.
Originally Posted by civicook thanks!! but can someone please correct me on thiswhen you do your conversion you will notice that most if not all the wire colors on the obd1 plugs are the same as the wire colors on the obd0 harness if you follow that link i posted it will show you exatly what color wire goes where what color wires go to your injectors everything you need to know, i followed the the directions in the link and my car started the first try read the link...

example information from the link

A plug (1992-1995 plug)
A1 (A1) ----gt; A1 (A1)   Injector 1
brn --------gt; brn  lt;--------------basically that means solder the brown wire on the obd1 plug to the brown wire on the obd0 harness all the way down follow it and you cant go wrong...how much easier can it get     

A2 (A3) ----gt; A2 (A3)   Injector 2            when you get to the injectors you dont have just run your own                                                                         wire to the injectors and connect them to the proper location on the                                                                  obd1 plugs..
red --------gt; red
A3 (A5) ----gt; A3 (A5)   Injector 3
lt. blu ----gt; lt. blu
A4 (A7) ----gt; A14 (A12)   Main Relay
grn/yel ----gt; grn/blk  lt;-------same thing except grn/yel to grn/blk
A5 (A9) ----gt; A5 (A11)   EACV
grn/wht ----gt; blu/yel
A7 (A13) ---gt; B13 (B6)   Check Engine Light
grn/org ----gt; grn/org
A8 (A15) ---gt; B2 (B3)   A/C Clutch Relay
blk/red ----gt; yel
A11 (A21) --gt; B8 (B15)   Ignition Unit Signal
red/grn ----gt; wht
A12 (A23) --gt; A9 (A2)   Main Relay
blk --------gt; blk
A13 (A25) --gt; A6 (A13)   Main Relay
yel/blk ----gt; yel/blk
A14 (A2) ---gt; A4 (A7)   Injector 4

i dont know what else to say this is exactly how i did my obd1 conversion...

.thank dude i think i got it