What happens if you dont fuse both ends of the wire connecting two batteries?

[Mike Troll 10+ year member]

The fusing gods come and kill you in your sleep....

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[05AztecRed 10+ year member]

Just curious but im fusing both of mine anyway

You mean having a fuse within 18" of battery-a(in engine bay) and another within 18" of battery-b located in the trunk?

OR

You mean having one on both the pos. and neg. wire?

Fuse is there to protect the wire. If for some reason there is a power surge(spike) that is in excess of the allowed wattage of the wire, the fuse will pop and cut off any power from flowing. While not having a fuse will allow the surge to continue thus heating the wire and the surrounding area and eventually starting a fire if the heat is hot enough...

 

[dleccord 5,000+ posts]

I dont think he meant the negative wire.

 

[audiolife 5,000+ posts]

fuses help stop smokey the bear from paying a possible visit

 

[dleccord 5,000+ posts]

refuse the fuse.

 

[nVRuckus 5,000+ posts]

Just curious but im fusing both of mine anyway

what can happen is the battery on the unfused end overloads the wire and you need to buy a new wire. chances of it happening slim but thats what "can" happen.