Guage wiring 
Guage wiring
TECH Resident
Joined: Jun 2004
Posts: 841
Likes: 2
From: Tampa, FL
You aren't going to find a temp wire. The computer controls the temp gauge in the 03 truck. You might need to adapt the sending unit from your original engine and make it work.
The oil wire is a tan wire that goes from the sending unit in the back of the engine to, I believe, one of the connectors by the 03 truck ECM. You'll have to trace it or check it with a volt meter probbaly.
The tach wire comes out of the 03 ECM, Red connector Pin 10, white wire.
The oil wire is a tan wire that goes from the sending unit in the back of the engine to, I believe, one of the connectors by the 03 truck ECM. You'll have to trace it or check it with a volt meter probbaly.
The tach wire comes out of the 03 ECM, Red connector Pin 10, white wire.
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Staging Lane
Joined: Aug 2004
Posts: 58
Likes: 0
Is it the metal cap with 2 bolts in it right above the oil filter? on my pcm on the white number 10 wire I can not get a tach to work. Any suggestions? thank you
Last edited by boner58; Oct 19, 2004 at 10:53 AM.
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