Random wire

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.

tony81

tony81

Junior Member
Joined
Oct 1, 2024
Posts
1
Reaction score
1
Location
Vancouver Island BC
First Name
Vancouver Island BC
Truck Year
Tony
Truck Model
78 C25 camper special
Engine Size
Heavy duty 350
Can anybody tell me what this blue wire coming up behind my motor in between the firewall with a round rubber plug on it before it’s only one wire
 
PrairieDrifter

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,853
Reaction score
5,646
Location
North Dakota
First Name
Mason
Truck Year
84,79,77,76,70,48
Truck Model
Suburban k10, bonanza k10, k30, k20, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350, 350
Yep it's one blue wire. One end plugs into a thingymajig. Then it plugs into a thing on the other end.

You're working on a 1942 ford right?
 
DoubleDingo

DoubleDingo

Full Access Member
Joined
Jul 3, 2012
Posts
11,250
Reaction score
17,176
Location
Right where I am
First Name
Bagoomba
Truck Year
1981
Truck Model
81-C20 Silverado Camper Special-TH400-4.10s
Engine Size
Carb'ed Vortec 350
We need a pic of the wire, some info on the vehicle you're working on. I don't think any of us are capable of seeing what you see through your eyes. Take a pic, post it up, and provide info on what you're working on, then you'll get meaningful replies.
 
Grit dog

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
6,970
Reaction score
12,220
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Assuming it’s your 78, my 77 that doesn’t have hacked up wiring does not have a single blue wire that I can see coming out of the firewall.
The only blue wires in the region are 2 of them that are parts of 2 plugs fling to the wiper/washer motor.
Rubber plug on a single wire sounds like a sensor. Oil pressure or temperature.
 
ali_c20

ali_c20

Full Access Member
Joined
Sep 20, 2016
Posts
1,302
Reaction score
1,853
Location
Austria
First Name
Alexander
Truck Year
1974, 1979
Truck Model
C20, K5
Engine Size
350, 350
DoubleDingo said:
We need a pic of the wire, some info on the vehicle you're working on. I don't think any of us are capable of seeing what you see through your eyes. Take a pic, post it up, and provide info on what you're working on, then you'll get meaningful replies.
Click to expand...
Welcome from Austria. Blue is a Ford wire, you can remove it.
 
PrairieDrifter

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,853
Reaction score
5,646
Location
North Dakota
First Name
Mason
Truck Year
84,79,77,76,70,48
Truck Model
Suburban k10, bonanza k10, k30, k20, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350, 350
Well get it figured out for him. But he's not getting off Scott free. Gotta get some kind of **** for it lol. Not all squares are equal.

Plus most newcomers are one post wonders then they run.
 
Turbo4whl

Turbo4whl

Supporting Member
Supporting Member
Joined
Oct 30, 2019
Posts
3,126
Reaction score
7,255
Location
Downingtown, PA
First Name
Wayne
Truck Year
1974
Truck Model
Jimmy
Engine Size
350
PrairieDrifter said:
Plus most newcomers are one post wonders then they run.
Click to expand...
You are probably correct! I have been doing this too long, I already have it figured out. Blue wire down to the frame. Wrapped around the brake lines a few times to the back of the truck. It ends by the taillight wires that have a bunch of butt connectors. PO had a trailer connector with electric brakes. PO yanked the controller before he sold the truck.

Okay, I'm taking wager's, any bets?
 
PrairieDrifter

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,853
Reaction score
5,646
Location
North Dakota
First Name
Mason
Truck Year
84,79,77,76,70,48
Truck Model
Suburban k10, bonanza k10, k30, k20, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350, 350
Turbo4whl said:
You are probably correct! I have been doing this too long, I already have it figured out. Blue wire down to the frame. Wrapped around the brake lines a few times to the back of the truck. It ends by the taillight wires that have a bunch of butt connectors. PO had a trailer connector with electric brakes. PO yanked the controller before he sold the truck.

Okay, I'm taking wager's, any bets?
Click to expand...
Sounds about right lol. I would have guessed electric choke, or for some kind of aftermarket gauges myself. The trailer option is a pretty solid bet lol
 
You must log in or register to reply here.

Similar threads

Chris64
What could this random tube attached to the exhaust be?
Replies
13
Views
941
Ricko1966
R
RanchWelder
Electrical dash wiring / wire color issues.
Replies
6
Views
2K
RanchWelder
RanchWelder
K
Spark Plug Wire Holders
Replies
2
Views
198
fast 99
fast 99
R
Wire identification 81 c30 dually
Replies
6
Views
714
RottenSquare
R
7
What is this wire? (1979 K10)
Replies
9
Views
1K
79sqbdy
7

Latest posts

Forum statistics

Threads
44,163
Posts
950,679
Members
36,276
Latest member
2manysquares2care
Top