So my original terminals needed to be replaced. I didn't want to replace the whole cables so I tried to fix it myself. This is what I have done. I have one 2 gauge copper connector for the negative and used two 4 gauge connectors for the two positives. Is this okay? or will my truck burn up in flames?

Here is a picture of my homemade flatbed. Im going adjust the pitch the front of the bed down a little to make it match the lines of the truck, or maybe a leveling kit instead.

 

Yup those cables look fine, just watch nothing hits that positive terminal.

 

I am not an electrician or an engineer but if you can use 10 gauge wire in a 220 circuit in your house, a 12 volt battery and 4 gauge cable should handle the load in your truck.

 

Its the amperage, thats why you need large gauge cables so all that current can flow without burning up the cables. And you need both positive cables, one to the the starter replay and the other to the starter solenoid.

Household service is anywhere from 60-100 amps at 220v then goes to you're 15-20 amp circuits at 110v-120v

Starting you're truck you're putting out 900+ amps (depending on the battery)

 

Slight hijack, where'd you get your terminals at? I need to do this same thing.

 

This is my positive connection. Works like a charm.

 

Make sure to keep all those connections clean and tight and you should be fine. Personally I prefer solder on ends like factory. All you need to do is trim and strip the wire. Melt some solder into the terminal with a propane torch. Then stick the wire into the melted solder. If you measure and trim neatly you have a nice factory connection. I picked up some heavy shrink tube and made a flex guard for extra protection.

 

My turn

 

Meh, not pretty but it works. Didn't get around to shrink tubing it.

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"Well there is a major difference in Battery wiring and house wiring.
The difference isnt the obvious Voltage being much lower, But rather that Amperage being WAY WAY higher in the 12v system of a vehicle.
keep in mind you may be using 800-1000 AMPs for a battery in a vehicle and your home may have a 100 amp main.
that high Amperage would MELT a 220v 10 Guage wire when starting a vehicle.
220V in your home will probably be a 30 Amp circuit like your dryer or maybe a stove.
​​eeeeyuge difference in draw and as a result heat.
​​​​just an FYI.