b series plug help(updated with actual pics-7-18-2011)

90s_fan

ok guys so i finally got a swap in the wagon. type r head with crower internals. high comp pistons, b18b block. i got everything switched from my 91 si hatch to my wagon. my problem lies in one last plug i hope. its the plug behind the drivers shock tower. its tan and round.the plug on the b serriees harness isto big or too small to plug into the one on the car.


looks like the one on the left.


my problem is is the plug coming from the wagon is i think i counted 11 wires. and the plug thats supposed to plug into it from the b series harness is i think i counted 8 wires. i follwed the plug inside the car and it gots into the cabin harness. if it had a plug inside the car i was gonna just unplug it from the hatch and plug it in the wagon.


i drove the hatch and everything was plugged in and working.

i wasnt sure if they made a jumper for the 2 or if you guys just cut and rewired something.i figured before i counted the different numbr of wires i could cut and splice in th new connector but id have extra wires.

please help me this is one of the last things i need to figure out to have the wagon onthe road. i also was thinkin that the plug was fo the injectors but im not 100% on that.

these are the actual plugs im having troube with.
this is the driver shock tower plug on the wagon. its a round connector with 12 wires.

this is the same plug but in the 91 civic si hatch. which the b swap was in. it is a round plug with 8 wires.

this is the plug on the harness that is also round 8 wire that needs to plug into the shock tower plug.

i kno that the eight wire plug is for the injectors. i color matched the wires in the plug with the injectors. all colors and amount of wires match.
so i need to know if i have to make a jumper plug between the 2 and or what each of the 12 wires go to! i figure that the reason the plugs wont match up is because the wagon was dual point and the hatch is multipoint.


with that said im not sure if kahuna(whos wagon this was)had a jumper plug wired at one time. because if any body remembers he had a b16 in the same wagon.

if anyone can tell me what the 12 wires go to and how to make a jumper plug or maybe just point me in the rite direction i would gladly appreciate it.


thanks fr the help in advance.

bam-bam

The 2 plugs you have pictured are for the distributor.

edit: Upon reading more closely, you said it'slikethat plug. What year is your wagon? I recently ran into a similar problem with my '89.

Read through this and see if it helps.

viewtopic.php?f=10&t=8546&hilit=%2789+wiring

90s_fan

bam-bam wrote:

The 2 plugs you have pictured are for the distributor.

edit: Upon reading more closely, you said it'slikethat plug. What year is your wagon? I recently ran into a similar problem with my '89.

Read through this and see if it helps.

viewtopic.php?f=10&t=8546&hilit=%2789+wiring

my wagon is a 91.yeah it looks identical to the one on the left. i dont think that wll help. both plugs are round not square. i looked at all the wire colors and each injector has the same color wire thats in the plug. for example.

1 injector has red/yellow
1 injector has light blue/yellow
1 injector has brown/yellow
1 injector has i think dark blue/yellow

i cant remember the last one due to not having the car in front of me.
the plug has one wire of each of thos colors and i think 2 yelllows or just one.

i have a d series harness that is dual point and i grabed it to see if the plug off that plugged into the shock tower plug and it does. the d series harness came with the wagon.

90s_fan

25 views and only bam-bams tryed to help?

all these wagons with b swaps and no help?



come on guys i need to get ths n the road.

JDMWago666

The 12 wire plug you are referring to, also has the wires set for the resistor box. Thats why the b swap harness has 8 and the wagon has 12. Four of those wires go to the resistor box. Being that the b swap you are doing was most likely obd1 than you don't need a resistor box for obd1 only for obd0(which the wagon is). Get it? The swap is obd1(which doesn't need a resistor box) and the wagon is obd0(which does need a resistor box. If you are not going to be using a resistor box than there is a way to delete it(that part I do not know)
If the 8 plug wire is too small than just convert the stock harness to mpfi and obd1. It's easy, there are plenty of write ups on the interwebz to do it. I have seen that some harness' have smaller shock tower plugs than others.
As charb and another friend told me, rule of thumb: Always use the standard harness for a swap.
It's less of a headache.

Speed Phreak

Easiest thing to do is just re-use the dual-point(DPFI) harness from the original engine and to do the multi-point conversion. It's extra 6 wires(3 more for VTEC) and fairly easy to do if you take your time. Depending on your needs you don't even have to wire the resistor box in if you're using an OBD-1 ECU/injectors/Distributor.

Take it from me, i've done loads of DPFI conversions and B-series ED/EE chassis swaps. Using the original harness will save you a lot of headaches and wire tracing.

90s_fan

i totally get it. the swap was in a 91 civic si thats sitting in my yard. the swap ran and everything. the harness was converted well as far as i know. the wagon had a b16 in it at one time so im not sure what would be different. i followed the wires for the shocktower plug into the cabin and they are in with the whole car cabin harness. therefore i dont kno how to convert it? i kinda figured from reading they were for the resistor box but wasnt sure.

also wasnt sure if i could make a jumper plug to go from the shock tower plug to the enngine harness.
also the swap is obd1.

Speed Phreak

90s_fan wrote:

i totally get it. the swap was in a 91 civic si thats sitting in my yard. the swap ran and everything. the harness was converted well as far as i know. the wagon had a b16 in it at one time so im not sure what would be different. i followed the wires for the shocktower plug into the cabin and they are in with the whole car cabin harness. therefore i dont kno how to convert it? i kinda figured from reading they were for the resistor box but wasnt sure.

also wasnt sure if i could make a jumper plug to go from the shock tower plug to the enngine harness.
also the swap is obd1.

The Si was a factory MPFI car, the Wagon (unless it's an RT4WD) is a DPFI car and will need to be converted to multi-point. Even if the wagon had a B16 at one point, it's still not a factory MPFI car. Both the car side and engine harnesses are different between the MPFI and DPFI cars. You can't use the MPFI harness (from the 91 Si) in the wagon, the plugs and plug pin-outs don't match at all.

Unless you're out of options i'd rule out the jumper plug option, it would be more trouble than it's worth. I'd use the engine harness that came with the wagon(if you have it) or see if you can acquire another DPFI harness(wagon, hatch, 4-door) and convert it to MPFI. If you're running an OBD-1 engine and plan on running and OBD-1 ECU, you can convert the distributor plugs, eliminate the need for a resistor box, and do the other minor OBD-1 provisions when you do the DPFI conversion.

90s_fan

Speed Phreak wrote:

90s_fan wrote:

i totally get it. the swap was in a 91 civic si thats sitting in my yard. the swap ran and everything. the harness was converted well as far as i know. the wagon had a b16 in it at one time so im not sure what would be different. i followed the wires for the shocktower plug into the cabin and they are in with the whole car cabin harness. therefore i dont kno how to convert it? i kinda figured from reading they were for the resistor box but wasnt sure.

also wasnt sure if i could make a jumper plug to go from the shock tower plug to the enngine harness.
also the swap is obd1.

The Si was a factory MPFI car, the Wagon (unless it's an RT4WD) is a DPFI car and will need to be converted to multi-point. Even if the wagon had a B16 at one point, it's still not a factory MPFI car. Both the car side and engine harnesses are different between the MPFI and DPFI cars. You can't use the MPFI harness (from the 91 Si) in the wagon, the plugs and plug pin-outs don't match at all.

Unless you're out of options i'd rule out the jumper plug option, it would be more trouble than it's worth. I'd use the engine harness that came with the wagon(if you have it) or see if you can acquire another DPFI harness(wagon, hatch, 4-door) and convert it to MPFI. If you're running an OBD-1 engine and plan on running and OBD-1 ECU, you can convert the distributor plugs, eliminate the need for a resistor box, and do the other minor OBD-1 provisions when you do the DPFI conversion.[/quote:30mt3vrv]


even if i do the DPFI conversion there is only injectors. every thing plugs in. i got the whole motor in the wagon. i ran all theplugs through the firewall like to the ecu and stuff. it has a jumper harness and every plug plugged in. the only plug is the shock tower plug. i was told it has the extra wire for the resistor box but how would i end up not using the extra wires if i convert a harness. its hard for me to explain what im trying to say.

wagonef8

so you are just using the Si harness on DPFI wagon harness even if it plugs in, alot of the wiring is diferent like IACV is on passenger side on Si and on driver side plug on dual point and the list goes on unles you change interior harness witch is a lot work. you will need to do MPFI conversion here is my write up it suck but gives you an idea on what to do



viewtopic.php?f=7&t=11851