I need to get a Si engine harness to work with the CRX HF. I was told the shock tower plugs have different pinouts.

Anybody have these pinouts or know where to get them? I've searched long and hard.

-Shane

 

bump for some helpful knowledge

 

HELP me out!!!! Called all my junkyards today and nobody had any HF wiring harness's

-Shane

 

ever figure out ur problem or a pinout? i need one as well

 

i have the pin outs.

 

ive got a 90 HF and im using a 90 civic si harness from a hatch im pretty sure. youve got the pinout for the 7 wire driver shock tower?

 

7 or 9 i dont remember exactly, but the small one not the 14 pin for like the DX

 

yes i have them.

 

it may not work for you if you are still using an EGR valve (stock HF manifold).

 

no no ive got an obd0 b series converted to obd1

 

i moved the pins for the injector resistor yellow/blk wire and i got 12v at my injectors, which i did not have before. i just do not know what other pins may need to be rearranged

 

injector wiring is different on the HF than the SI.

shock tower diagram for HF engine harness side driver shock tower plug:

[1][2]
[3][4][5][6]
[7][8]


1. IACV -Blue/Yellow
2. IGN. Cont. Mod. Dizzy -White
3. EGR - Yellow
4. Injector #4-Yellow
5. Injector #1-Brown
6. 12v power for resistor box - Yellow/Black
7. Injector #2-Red
8. Injector #3-Light Blue

 

so what wire does the HF harness have that the SI harness doesnt have? do u have the color pinouts for the other side, i need the chassis side of the pinout too

 

the pinout will be a mirror image for the chasis side plug. like i said its easier (plug n play) if you use a stock hf harness.

 

wwell then would you happen to know or have the 90 civic si engine side pinout?

 

engine harness side pinout for MPFI (SI)

..[1][2]
[3][4][5][6]
..[7][8]

1. inj2 -red
2. inj1-brown
3. inj3-blue
4. inj4-yellow
5. grn therm. valve-blk
6. sig. therm. valve-light blue
7. IACV-blue/yellow
8. 12v for resistor box-yellow/blk

 

your pretty much going to ignore or leave #5 and #6 empty since you dont need the thermal valve on a b-series.

 

ok because i had no power all day until i decided to try n jump those and had 12v at my injectors. also i had continuity at all 4 injector clips and ecu inj2 pin number A3

 

and ok so the solid blue (6) that goes to the small 2 pin connector on the other side of the engine harness almost, is the thermo valve from the d series?

 

the thermo valve is only on the A6 manifold.

 

yea i gotcha. so i just need to match all those pins and it will run if i have no other wiring issues, correct? and also an obd0 harness does not come with an ect switch does it?

 

yes it does have an ECT switch.

 

is ECT not the brown sensor on the back of the block for a b series, right next to the thermostat. and if so i do not have a connector for it, unless the IACV is not the same type of connector on the SI harness?

 

are you looking for something like this?

 

like does the switch that i think is IACV really supposed to be on my ECT? and do i actually have the same type of connector from d series to b series IACV? or do i need to add a connector.

and while were at it, the yellow and green wires on a civic si harness are reverse lights, no?