Hey magnum, thanks for the complimant, but i aint no smarter than anyone else really, Just happend to have been in the Industry for WAY too long! Beins how the battery is in back, this does create some issues with the Big 3. The power wire running from the front of the car to the rear of the car should be fairly large, because this wire will be what turns over your starter. So that wire should not need upgraded. I would look at the existing wire from your alternator, and follow it and see where it goes. May run to the starter or some factory power distribution area under the hood, such as a fuse box. If it appears to be less than adequate, (probably is less than adequate), I personally would look at running a wire from the alternator to the same location as the heavy wire from the battery in the back. Alos dont forget to reground the engine to the chassis, and the battery ground in the back! Unfortunatly the most I have ever seen from the car is from about 20 feet! so I am not familiar with how there electrical sytem wiring is layed out. I bet Ranger has a chlue on these!!!!! But generally speakeing, what i have told you is pretty basic and common. Might be similiar to the Viper, which i upgraded the wiring on years ago.