Smoking Ground 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.

454_SquarED

Junior Member
Joined
Jan 19, 2025
Posts
1
Reaction score
0
Location
South FL
First Name
Ed
Truck Year
1979
Truck Model
c10
Engine Size
454
My 87 running like a top after a new Coolant Temp Sensor and TV cable adjustment. Just when I say to myself, Self...this thing is running goooooood, I put my left blinker on, get into the left turn lane, after sitting for about 10 seconds waiting for traffic to clear the truck dies. Try to restart and there is barely enough power to turn the starter...smoke coming from the hood and i see this (Pic attached).

What in the holy name of Square Body demons caused this? Some funky ground thing? I've only had the truck for a couple weeks but its been fine up to this point.

The only thing on was the blinker trying to make the left. Every time i tried to start it that wire would start burning. Tried again and started and ran fine...ONLY THING DIFFERENT is I turned off the blinker. Drove it home like a BMW owner (Not using the blinker) and no problems. I suspect some short with the blinker circuit. I noticed the voltage gauge clocks back and forth while the blinker is on. I am assuming when the blinker is on that small wire is carrying the load of the starter but I'll be damned if I can figure out why when its got a big 2 guage wire sitting right next to it grounded nicely.

Ohm meter shows little to no resistance across the burnt wire to its grounding point.

Any ideas?
 

Attachments

  • IMG_3014.jpeg
    IMG_3014.jpeg
    718.7 KB · Views: 6

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,828
Reaction score
7,066
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
My 87 running like a top after a new Coolant Temp Sensor and TV cable adjustment. Just when I say to myself, Self...this thing is running goooooood, I put my left blinker on, get into the left turn lane, after sitting for about 10 seconds waiting for traffic to clear the truck dies. Try to restart and there is barely enough power to turn the starter...smoke coming from the hood and i see this (Pic attached).

What in the holy name of Square Body demons caused this? Some funky ground thing? I've only had the truck for a couple weeks but its been fine up to this point.

The only thing on was the blinker trying to make the left. Every time i tried to start it that wire would start burning. Tried again and started and ran fine...ONLY THING DIFFERENT is I turned off the blinker. Drove it home like a BMW owner (Not using the blinker) and no problems. I suspect some short with the blinker circuit. I noticed the voltage gauge clocks back and forth while the blinker is on. I am assuming when the blinker is on that small wire is carrying the load of the starter but I'll be damned if I can figure out why when its got a big 2 guage wire sitting right next to it grounded nicely.

Ohm meter shows little to no resistance across the burnt wire to its grounding point.

Any ideas?
you need to shore up the grounds. Heads to the firewall. frame to core support. Engine to battery. core support to battery.
 

Latest posts

Forum statistics

Threads
44,741
Posts
966,826
Members
37,438
Latest member
Chevybox
Top