Balast resistor
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Cross-Country
Joined: Nov 2023
Posts: 56
Likes: 25
From: Long Island NY
Balast resistor
Hello all
Ive been having an electical issue with my truck. The PO put a cut off switch in the truck. Prior to my restoration i took pics of most of the old wiring. Now to my issue. I did a cab swap and had to do a swap of the internal harness becuase the donor cab had idot lights and i had gauges. I have 8 to 10 volts on my dash lights and had to run 12v wire to the coil to get the truck to run. This lead me to trace the resistor wire circuit. I have torn into the harness and have found two resistor wires. My quess is some add another wire when they did the cit off. I want rewire the start and run circuit and use a ceramic balast resistor in place of res wire. Has anyone gone this route?
thanks
Ive been having an electical issue with my truck. The PO put a cut off switch in the truck. Prior to my restoration i took pics of most of the old wiring. Now to my issue. I did a cab swap and had to do a swap of the internal harness becuase the donor cab had idot lights and i had gauges. I have 8 to 10 volts on my dash lights and had to run 12v wire to the coil to get the truck to run. This lead me to trace the resistor wire circuit. I have torn into the harness and have found two resistor wires. My quess is some add another wire when they did the cit off. I want rewire the start and run circuit and use a ceramic balast resistor in place of res wire. Has anyone gone this route?
thanks
Cargo Master
Joined: Mar 2008
Posts: 2,577
Likes: 210
From: Washington
This one will work, I didn't find any close to 1.15 ohms , which is what the original resistance wire is.
https://a.co/d/euXImA7
MSD 8214 Coil Ballast Resistor 0.8 ohm
Brand: MSD
4.5 4.5 out of 5 stars 165 ratings
Lowest price in 30 days
$18.41 with 10 percent savings-10% $18.41
Here's the math if you are interested....
.8 ohm ballast resistance plus 1.2 ohm equals 2 ohms total.
The ballast resistor will drop about 5 volts (40%), leaving about 7 volts (60%) to the coil positive.
You should check this, key ON, engine not running.
Jim
https://a.co/d/euXImA7
MSD 8214 Coil Ballast Resistor 0.8 ohm
Brand: MSD
4.5 4.5 out of 5 stars 165 ratings
Lowest price in 30 days
$18.41 with 10 percent savings-10% $18.41
Here's the math if you are interested....
.8 ohm ballast resistance plus 1.2 ohm equals 2 ohms total.
The ballast resistor will drop about 5 volts (40%), leaving about 7 volts (60%) to the coil positive.
You should check this, key ON, engine not running.
Jim
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