Tony Berndt

I am using a 96-98 EX wiring harness, adapter for ECU and Dizzy.

I have 3 plugs on the wiring harness unplugged and un-aware of where they go???

One is right next to the injectors, OBD2 civics have the IAT sensor in the intake tube so im not sure what this is for.

Second one is right next to the alternator plug, 3 wire connector, no clue as to wear it goes. Maybe for OBD2 engine or US model???

Third plug comes from the front bottom of Trans, 2 wire plug that has a lead to the top of the trans. Both Green wires???

I will post some pictures here shortly. I appreciate any and all help.

Tony Berndt

Update: Car runs and drives...

Tony Berndt

Here is a pic of plug number 1.
(Notice the OBD1 IAT sensor right behind it)


Here is Mystery plug number 2.
3 wire - grn/red wht/grn wht/red
(Haynes says ECM???)


and Mystery Plug number 3.
Have no clue what this is or where it goes???

HondaPartsHero

Pic 1 EVAP purge plug

Pic 2 Looks like CKF plug which the OBD1 engine doesn't have

Pic 3 reverse light switch wiring

Tony Berndt

What is the EVAP Purge? Do i need it on the OBD1?

As for the reverse light switch... my reverse lights still come on with it unplugged, im pretty sure i know where it plugs in but the plug would have to be extended, is that normal?

HondaPartsHero

You don't need the evap purge with obd1. Does that 2 wire plug go to the reverse switch on the transmission.

Tony Berndt

Yea it does, i just cant find out where to plug it into on this harness. There is one plug open right under the battery but not sure if thats the right one. Basically it would be the very first plug after the firewall....