Heated o2 wiring?
#1
Supreme Member
Thread Starter
iTrader: (1)
Join Date: Jun 2001
Location: Tacoma, Wa
Posts: 3,109
Likes: 0
Received 25 Likes
on
17 Posts
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Heated o2 wiring?
Figured since it was wiring related I'd post in here. I put in long tube headers and swapped to a 3-wire heated o2 sensor and just wanted to know if anyone else had done the same and what circuit they'd tapped into to power the heater element. Obviously something that gets 12v when the key is on but is there anything easy in the engine bay to tap off of?
#2
Member
Join Date: Mar 2004
Location: Kansas, where the wind howls
Posts: 388
Likes: 0
Received 0 Likes
on
0 Posts
Car: 84 Z28 H.O. w/Megasquirt II
Engine: semi-stock L69
Transmission: T-5 non W/C
Axle/Gears: 3.73 open
All of the 12V+ sources in my engine bay are the same color wire. Pink/black stripe was the color in mine. Your color may be different, but the same method should apply. Just pick any one of those.
Personally, I wired my heated o2 through the fuel pump circuit. This protects the sensor from heating up when the engine is off. I spliced onto the fuel pump side of the relay, right by the connector.
You may need to up the fuel pump fuse 5 or so amps.
Personally, I wired my heated o2 through the fuel pump circuit. This protects the sensor from heating up when the engine is off. I spliced onto the fuel pump side of the relay, right by the connector.
You may need to up the fuel pump fuse 5 or so amps.
Thread
Thread Starter
Forum
Replies
Last Post