ej1252

first time ever doing a b20 swap into a ef. its for a friends car. i got pretty much everything in except for the engine harness problem. we picked up a 90-91 harness. everythings pretty much plugs up except the one that connects from the engine bay to the ecu. like one of the clip fits but the other dont. i like to know what am i suppose to do? (theres a PIC if you scroll down)

THE SET UP:
integra da axles & halfshaft
innovative steel mounts (hydro tranny)
hasport cable to hydro conversion kit
ls intake manifold
90-91 engine harness
integra da spindles
jdm gsr tranny
b20b4 longblock
custom shift linkage
rywire obd0 to obd2 alternator conversion
rywire obd0 to obd1 distributor conversion
rywire obd0 to obd1 harness conversion
p75 obd1 ecu

staatsper4mance

you HAVE to use the harness that goes to the car.....not one for the engine or one from an acura integra

ej1252

the stock one doesnt plug up most of the sensors. and its a dpmfi engine harness

tonythetuner®

You use the dpfi engine harness and convert it to mpfi and then it all plugs right in! Check my sig. For my right up for doing the wiring

hatchet_honda

man you bought alot of rywire shizz...wayy easier to depin the plugs you already have. the ecu harness is a must tho. okay you have to use the dpfi engine harness that goes to this car. add 4 wires and convert it to mpfi. theeeen add plugs as needed to fit the b20. ya feel me? ya know like lengthen the fan switch wire and put an obd1 plug on the harness side. add your 4 wire o2 wiring...aaand so on

ej1252

nice write. appreciate it.

crx_si-r

you do realize that the obd0 to obd1 alternator jumper was plain useless. especially since obd0 and obd1 alternators are a direct plug n play set up. they have the exact same plug.

ej1252

my fault..meant its a obd0 to obd2 jumper

alternator is obd2

crx_si-r

You would still nee to convert to mpfi

91efmatt

hey i was just wondering i got a ef hach shell off my cousin and it needs a new harness and i want to put a b20 in it would it just be easier to put a mpfi hanress in it ts already been swapp to a b series but i just got a b20 and was wondering im new to honda but i know i need the axels and everything but the harness is bad so i need help its a 91 ef what can i do

crx_si-r

if the car is properly converted, then usethe harness that came with the car. if the harness is missing, get a harness that matches the car and convert

91efmatt

i cant use the harness the harness is fried so what should i do get a si harness for my year or what

Mr.Cheezil

no, you will have to source another dpfi harness and convert it to mpfi.

91efmatt

why cant i just get a mpfi harness

Mr.Cheezil

it wont work with the chassis harness.
i have a b20b in my 4 door dx which was previously dpfi, converted my harness to mpfi and converted the b20 to OBD0 with ls components and am running a pr4 ls ecu. not a single problem...

91efmatt

how would i do the dpfi to mpfi im not good with electric work and dont really have patience

91 EF DX

If you can't do the conversion yourself you can always buy a conversion harness

crx_si-r

pm me

91efmatt

whats the harness called

91 EF DX

DPFI TO MPFI CONVERSION HARNESS

Buddha214

I got a sedan shell no cabin harness or no wiring so I got a complete si harness fromel under the dash to my headlights an motor harness can I u se that or is it not a option my sedan is a 89 an so was the si I got it from

codybuRr

that engine harness looks cut or something..

Chris Deters