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Factory 3 wire o2 harness to power,ground,signal AEM AFR

  • Thread starter Thread starter a1machinista1
  • Start date Start date Feb 26, 2024
A

a1machinista1

Active Member
Sep 2, 2023
112
19
28
Oregon
Feb 26, 2024
#1
  • Feb 26, 2024
  • #1
3 wire harness
Gray is signal.
Will the gn/blk and blk/gn wires supply keyed 12v and ground when isolated?
(The heater wires)
 

90sickfox

Wasn't a pretty sight...and I've got big hands
SN Certified Technician
Mar 2, 2015
6,945
5,816
213
Feb 27, 2024
#2
  • Feb 27, 2024
  • #2
No I wouldn't tap to those wires for 12v. The heater circuit on most cars cuts off after a set time. Not sure about mustangs but that circuit is sensitive.
 
A

a1machinista1

Active Member
Sep 2, 2023
112
19
28
Oregon
Feb 27, 2024
#3
  • Feb 27, 2024
  • #3
I went with under the dash...
 
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