Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Identifying this wire

Thread Tools
 
Search this Thread
 
Old Apr 30, 2020 | 11:40 AM
  #1  
Camcam90's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2020
Posts: 22
Likes: 1
From: Los Angeles
Car: 90 Camaro RS 305
Identifying this wire

Hi guys, I am new to this forum and this is my first post. I just purchased a 1990 Camaro RS 305 5.0 TBI, and I noticed this wire with connector the the top driver side corner inside engine bay. Would anyone know what this wire is for? thanks!

Reply
Old May 4, 2020 | 08:10 PM
  #2  
Rockguy's Avatar
Member
15 Year Member
 
Joined: May 2007
Posts: 237
Likes: 0
From: IL
Car: 88 IROC-Z
Engine: 5.7 TPI
Re: Identifying this wire

Possibly an underhood light?
Reply
Old May 4, 2020 | 09:30 PM
  #3  
sofakingdom's Avatar
Supreme Member
20 Year Member
Community Builder
iTrader: (1)
 
Joined: Sep 2005
Posts: 27,962
Likes: 2,471
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Identifying this wire

No, probably not that... that would more likely be over on the other side. At least, in cars that have them, that's where it is.

There are LOTS of options that any given car might have come with, and not all, or maybe even VERY few, had them. That may be one such. If there's nothing there to plug it into, and everything you ACTUALLY have works, then, … maybe it's one of THOSE things.
Reply
Old May 4, 2020 | 11:38 PM
  #4  
Camcam90's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2020
Posts: 22
Likes: 1
From: Los Angeles
Car: 90 Camaro RS 305
Re: Identifying this wire

I see. It's by the relay's and looks like the middle relay is missing so not sure if it's possibly that

Last edited by Camcam90; May 4, 2020 at 11:47 PM.
Reply
Old May 5, 2020 | 08:45 AM
  #5  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Identifying this wire

I'd say that it is the fuel pump prime/test connector. Although I've never seen it as a black wire with with that type of connector (usually a red wire). But that is where it would be. To use it, key-off, then run a jumper from that connector to battery +. That should run the fuel pump.

Having only two relays on a VIN E Camaro TBI is correct. One for the fuel pump and the other for the cooling fan (no A/C or MAF relays).

The odd thing is the lack of an ESC module (knock filter). It should be mounted to the front of the relay bracket.

RBob.
Reply
Old May 5, 2020 | 09:23 AM
  #6  
Dyno Don's Avatar
Supreme Member
25 Year Member
iTrader: (7)
 
Joined: Mar 2000
Posts: 5,709
Likes: 133
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Identifying this wire

It is for fog lights on a Z28
Reply
Old May 5, 2020 | 08:13 PM
  #7  
Rockguy's Avatar
Member
15 Year Member
 
Joined: May 2007
Posts: 237
Likes: 0
From: IL
Car: 88 IROC-Z
Engine: 5.7 TPI
Re: Identifying this wire

Originally Posted by sofakingdom
No, probably not that... that would more likely be over on the other side. At least, in cars that have them, that's where it is.

There are LOTS of options that any given car might have come with, and not all, or maybe even VERY few, had them. That may be one such. If there's nothing there to plug it into, and everything you ACTUALLY have works, then, … maybe it's one of THOSE things.
My bad. I thought I was looking at the passenger side
Reply
Old May 13, 2020 | 12:18 PM
  #8  
Camcam90's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2020
Posts: 22
Likes: 1
From: Los Angeles
Car: 90 Camaro RS 305
Re: Identifying this wire

Originally Posted by RBob
I'd say that it is the fuel pump prime/test connector. Although I've never seen it as a black wire with with that type of connector (usually a red wire). But that is where it would be. To use it, key-off, then run a jumper from that connector to battery +. That should run the fuel pump.

Having only two relays on a VIN E Camaro TBI is correct. One for the fuel pump and the other for the cooling fan (no A/C or MAF relays).

The odd thing is the lack of an ESC module (knock filter). It should be mounted to the front of the relay bracket.

RBob.
so i'm missing a knock filter relay ? sorry i'm very new and know very little about these engines.
Reply
Old May 14, 2020 | 10:14 AM
  #9  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Identifying this wire

Originally Posted by Camcam90
so i'm missing a knock filter relay ? sorry i'm very new and know very little about these engines.
Not a relay, but a module. After I thought about it I just figured someone carb swapped the engine and removed all of the EFI stuff. Can see the module in several of hte pictures in this thread:

https://www.thirdgen.org/forums/tbi/...-pictures.html

RBob.
Reply
Old May 14, 2020 | 10:57 AM
  #10  
Camcam90's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2020
Posts: 22
Likes: 1
From: Los Angeles
Car: 90 Camaro RS 305
Re: Identifying this wire

Originally Posted by RBob
Not a relay, but a module. After I thought about it I just figured someone carb swapped the engine and removed all of the EFI stuff. Can see the module in several of hte pictures in this thread:

https://www.thirdgen.org/forums/tbi/...-pictures.html

RBob.
My car is not carb it's a TBI fuel injected
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
87camaro kid
Tech / General Engine
2
May 29, 2009 02:33 PM
germ83
Electronics
7
Jun 2, 2004 07:35 PM
89transam
Electronics
1
Jun 12, 2003 04:16 PM




All times are GMT -5. The time now is 11:13 AM.