Not too long ago I switched from the single wire 02 sensors to the 4 wire heated sensors on my 93 z28. Around the same time my battery would die if I left my car off for too long. I was just wondering if converting to the heated sensors could be causing this. The link below is how I set mine up.

http://www.fastbird93.com/Installati...Conversion.htm

 

If you used "switched" 12V power, as shown in the wiring diagram, there's no way the heater circuit can drain the battery when the ignition is off.

 

Make sure the switched +12V source is +12 Ignition NOT +12V BAT. Power to heaters should only be on when the key is on. If that's OK then you have another problem, the O2's will not draw any current with ignition off.

 

I'll check that out. Thanks

 

I had my sensors tied into the +12v battery. Everything should be good now.

Thanks for the help