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87 Si Wiring Issue


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#1
Dear_Boss

  • Granny
  • Pip
    • Group: Members
    • Drives: 1985 CRX HF/Si, 1959 Chevrolet Apache, 2016 Harley Street Bob

Hello all,

 

this is my first post but ive spent alot of time researching on here for this car.

 

I have an 85 HF that im transferring an 87 Si engine into (D15A3). I have the wiring harness and ecu from the Si that im installing into the 85 but it looks like someone has stolen a portion of the under the dash  harness (see picture). Im wondering if someone can let me know what these wires go to. I believe its the relay tree including the PGM-Fi relays and emission control box or something. The wires are located under the dash on the left hand side. Im hoping i can still make this work but i cant find for sure what these wires go to. Also if anyone has the modules that these wires go to or an additional harness i would be willing to pay/trade.

 

i have a bunch of parts from the 87 Si like bumpers, header panel, fenders

 

ive had this car since i was 13, so 20 years, and im finally getting around to it for a good driver and fun car to just drive. The body and HF engine has ~30k original miles on it and is super clean which is super rare for New York. So if anyone is looking for an HF engine ive got one!

 

Let me know if more pictures would help.

 

Thanks in general to everyone for all the knowledge on here, its been super helpful.

 

FURtJ6H.jpg



#2
CSPCRX

  • Leadfoot
  • PipPipPipPipPip
    • Group: 2016 Contributor
    • Location:Phoenix AZ
    • Drives: B Powered 86 CRX SI, 2012 Audi S4, 07 Harley FXST Softail
    • Image Gallery
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It’s possible those are for the combo switch as the wires with the look to be for the ignition switch, large white wire.

 

try this link CRX is included.

http://windy-design....1986_Wiring.pdf


Victor
86 B-Powered CRX SI (SMF Solo2, HPDE-4 NASA & TA-A Time Attack
07 Harley FXST Softail
12 Audi S4

#3
Dear_Boss

  • Granny
  • Pip
    • Group: Members
    • Drives: 1985 CRX HF/Si, 1959 Chevrolet Apache, 2016 Harley Street Bob

Awesome, Thanks!

that has been a helpful diagram.

 

So far ive found that one of the clusters of wiring is for the main PGM-FI relay. It looks like the others go to the emissions control unit, brake check relay, rear defroster relay and side marker control unit.

 

ill still have to find those parts somewhere so if anyone has an 86-87 Si they are parting out let me know, i could use some wires/connectors



#4
CSPCRX

  • Leadfoot
  • PipPipPipPipPip
    • Group: 2016 Contributor
    • Location:Phoenix AZ
    • Drives: B Powered 86 CRX SI, 2012 Audi S4, 07 Harley FXST Softail
    • Image Gallery
    Garage View Garage

Check EBay see lots of those type of parts on there for sale.


Victor
86 B-Powered CRX SI (SMF Solo2, HPDE-4 NASA & TA-A Time Attack
07 Harley FXST Softail
12 Audi S4