does anybody know the thread where it show how to wire this up...have the conv. harness but need to know what else i need to wire....

 

what year?

obd2a 96 - 98
obd2b 99 - 00

if you have the conversion harness it should be plug and play - unless you are running your obd2 harness on an obd1 motor which didnt have vtec to begin with.

check these out (sorry for not going through them)

Electrical:
https://honda-tech.com/zerothread?id=682412- ECU Codes
https://honda-tech.com/zerothread?id=587460- Repinning an ECU
https://honda-tech.com/zerothread?id=810101- Identifying an ECU
https://honda-tech.com/zerothread?id=478377- ECU Pinouts
https://honda-tech.com/zerothread?id=558245- EK Wiring Information
https://honda-tech.com/zerothread?id=413799- Hondata Vs. AEM EMS
https://honda-tech.com/zerothread?id=644434- B18C1 into VX Wiring Instructions
https://honda-tech.com/zerothread?id=724252- Wiring VTEC
https://honda-tech.com/zerothread?id=461376- OBD2 to OBD1
https://honda-tech.com/zerothread?id=910218- Fuse Layout
https://honda-tech.com/zerothread?id=418159- VAFC Wiring Diagrams
https://honda-tech.com/zerothread?id=539424- EG Mirrors Wiring
https://honda-tech.com/zerothread?id=646714- EG Mirrors Wiring
https://honda-tech.com/zero...98906- Tach Lead for EG
https://honda-tech.com/zerothread?id=807030- Reprogramming Keyless Entry Remotes
https://honda-tech.com/zerothread?id=1066681- Proper Form of Overcurrent Protection
https://honda-tech.com/zerothread?id=1513794- Code 1 Fix for EG VX/CX Owners

 

a 98 hatch dx...throwing a code 20 and a code 41...vtec does not engage....please help me

 

CEL 20: Electrical Load Detector Circuit Low/High Input
CEL 41: Primary HO2S (No. 1) Heater System

this might help.. http://www.ff-squad.com/tech/w...8.jpg