Cleaning up my wiring. What does this plug go to?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

MisterB

Full Access Member
Joined
Sep 9, 2019
Posts
676
Reaction score
845
Location
Northwest
First Name
AJ
Truck Year
1980
Truck Model
GMC K2500 4X4
Engine Size
350
I have an Edelbrock carb with an electronic choke. The PO wired the red choke wire to the part that's cut. I verified that it only gets power when the key is turned. I cleaned up the connection and redid it, so the truck still works, but I'm wondering what this plug is intended for? Does it go to the oil pressure sending unit? That gauge doesn't work on my cluster. Everything else works though, so I'm a little baffled as to what this plug is for.
You must be registered for see images attach


Sent from my SM-N975U1 using Tapatalk
 

78C10BigTen

Full Access Member
Joined
Apr 12, 2017
Posts
15,948
Reaction score
25,339
Location
pennsylvannia
First Name
Ted
Truck Year
1978
Truck Model
C10 BIG TEN
Engine Size
350
The plug almost looks like the altenator plug.... dont hold me to that. I ran a red wire with a male blade connector from a key hot fuse in the fuse box out through the firewall to my choke... correct way??? No but it works and i was in a hurry to get it on the road.
 

RoryH19

Full Access Member
Joined
Aug 21, 2015
Posts
1,668
Reaction score
1,082
Location
Texas
First Name
Rory
Truck Year
1987
Truck Model
R10 Silverado SWB
Engine Size
350 TBI
Agree, alternator was the first thing I thought of.
 

MisterB

Full Access Member
Joined
Sep 9, 2019
Posts
676
Reaction score
845
Location
Northwest
First Name
AJ
Truck Year
1980
Truck Model
GMC K2500 4X4
Engine Size
350
OK, help me understand this then. My alternator is obviously plugged in and working, so why would this plug be available?

Sent from my SM-N975U1 using Tapatalk
 

Rickf

Full Access Member
Joined
Jul 29, 2017
Posts
571
Reaction score
713
Location
Grafton NH
First Name
Rick
Truck Year
1974, 1954 & a 1937
Truck Model
K20
Engine Size
350
Will it reach the front of the head? Dual alternator set up?
 

MisterB

Full Access Member
Joined
Sep 9, 2019
Posts
676
Reaction score
845
Location
Northwest
First Name
AJ
Truck Year
1980
Truck Model
GMC K2500 4X4
Engine Size
350
Will it reach the front of the head? Dual alternator set up?
it might be just barely long enough to reach the front of the head, but not to where my current alternator is.

Here's a Pic from yesterday when I was changing out the valve cover gaskets

Sent from my SM-N975U1 using Tapatalk
You must be registered for see images
 

MrMarty51

Full Access Member
Joined
Oct 25, 2012
Posts
7,793
Reaction score
10,020
Location
Eastern Montana
First Name
Martin
Truck Year
1978
Truck Model
K20
Engine Size
400
YUP, smog pump or A/C compressor.
 

MisterB

Full Access Member
Joined
Sep 9, 2019
Posts
676
Reaction score
845
Location
Northwest
First Name
AJ
Truck Year
1980
Truck Model
GMC K2500 4X4
Engine Size
350
OK guys. Thanks for the info

Sent from my SM-T720 using Tapatalk
 

shiftpro

Full Access Member
Joined
Aug 31, 2012
Posts
4,855
Reaction score
6,092
Location
BC Canada
First Name
shiftpro
Truck Year
73-87
Truck Model
1500, 2500, 3500
Engine Size
350, 383, 454, 496!
Amazing this place. :burnout:
 

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,750
Reaction score
18,191
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350 w/203
No smog pump. More likely AC Compressor.
 

MisterB

Full Access Member
Joined
Sep 9, 2019
Posts
676
Reaction score
845
Location
Northwest
First Name
AJ
Truck Year
1980
Truck Model
GMC K2500 4X4
Engine Size
350
No smog pump. More likely AC Compressor.
Even though it's a non AC truck, and always has been?

Sent from my SM-N975U1 using Tapatalk
 

Latest posts

Forum statistics

Threads
44,162
Posts
950,638
Members
36,273
Latest member
dannyphx
Top