New positive battery cable, too many wires?

[bmcduffy]

Greetings

 

I just purchased a new positive battery cable from my local dealer. It has one wire more than the old wire I removed. (I don't think the old wire was OEM). The part number on the box is: 12157400.

 

I know the large one goes to the solenoid, the other longer one goes back up to the junction block on the firewall.

 

My question is, where do I connect the third wire? It is the same length as the main cable to the starter and is the same size and color as the wire that goes up to the junction block.

 

1990 C1500

5.0 litre

2 WD

 

Thanks in advance for any help you can offer.

[redvett]

It hooks to the pos. terminal at the alternator.