Ive got an ls vtec in a crx that is converted to obd1 except for the o2 sensor. I have searched and have found two ways to do it. One is splicing into other wires and one is going straight to the ecu. Which is the best way and can someone explain to me how to do it because i am really confused. Thanks

 

What ecu are you using?
You need to get a connector and pigtails for it. You can wire it to the ecu.

four wires= 12v,one heater,one signal,and one ground.

 

I am using a p28. Can you explain how to wire it up?

 

O2 Sensor Input - WHT to D14 (needs to be a shielded wire)
Heater Control - BLK to A6
Sensor Ground - GRN to D22
Sensor Voltage - BLK to A25 or B1 (both are 12-volt sources, so either works fine.)

 

i dont know who told you but your wrong now the other guy who told you is right

 

yel/blk - A25 - 12V switched
org/blk - A6 - O2 heater control
grn/wht - D22 - sensor ground
wht/red - D14 - O2 signal wire

 

wtf??

 

whos wrong??

 

I don't know what the newb was saying!

 

so what should i be following?

 

my colors are on the sensor were they go to the computer. alscrx is telling you the colors at the computer.