Mystery plug
Thread Starter
Junior Member
Joined: May 2006
Posts: 98
Likes: 0
From: Sterling, VA
Car: 1987 Camaro IROC-Z
Engine: 350 5.7 TPI
Mystery plug
I wasnt sure if I should post this in electronics or tech but I'll try both.
I just bought a 5.7 350 TPI Iroc and havent ever worked on this engine so I'm still unfamiliar with it, but as I was looking around to get to know it, I found this plug unplugged from somewhere. The thing is that I dont know where it plugs into. I spent a good 2 hours with my cousin looking around to where it goes but couldnt find anything so I'm hoping someone else knows. Sorry if the pictures came out too blurry.

I just bought a 5.7 350 TPI Iroc and havent ever worked on this engine so I'm still unfamiliar with it, but as I was looking around to get to know it, I found this plug unplugged from somewhere. The thing is that I dont know where it plugs into. I spent a good 2 hours with my cousin looking around to where it goes but couldnt find anything so I'm hoping someone else knows. Sorry if the pictures came out too blurry.

Joined: Sep 2005
Posts: 27,904
Likes: 2,437
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
That looks like the mystery plug.
I think every FI car has it, must be used at the factory for diagnostic testing or something, but isn't used in an assembled car. It it has a black wire and a pink w/black stripe (ground and ignition) that's probably what it is.
I think every FI car has it, must be used at the factory for diagnostic testing or something, but isn't used in an assembled car. It it has a black wire and a pink w/black stripe (ground and ignition) that's probably what it is.
Member
Joined: Jun 2006
Posts: 408
Likes: 1
From: NJ
Car: 87 IROC
Engine: 5.7 TPI
Transmission: 700-R4
Axle/Gears: BW 7.75" 3.27
Rosadoc,
I keep running into you, this is the third post of yours that i am replying too. That plug means absolutely nothing to us. I too was baffled eight years ago when I bought my chariot. I can't tell what it's for, but I can tell you to treat it like an appendix. It may of had some use in the past on a different model with different options that used the same wiring harness, but for our purposes it has no use at all. Pretend it isn't there.
I keep running into you, this is the third post of yours that i am replying too. That plug means absolutely nothing to us. I too was baffled eight years ago when I bought my chariot. I can't tell what it's for, but I can tell you to treat it like an appendix. It may of had some use in the past on a different model with different options that used the same wiring harness, but for our purposes it has no use at all. Pretend it isn't there.
Thread Starter
Junior Member
Joined: May 2006
Posts: 98
Likes: 0
From: Sterling, VA
Car: 1987 Camaro IROC-Z
Engine: 350 5.7 TPI
thanks 87IROC. Sorry I've been posting so much, I just bought my IROC and its my first camaro so I'm still unfamiliar with it. As for the plug, I'm glad it has no purpose, I was worried about it all night
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