30 Inspirational Caterpillar Starter Wiring Diagram- Your starter went out and you want to replace it: Here's what to do:First you dependence to get the old starter out. Sometimes it's easy and sometimes not. The only reason it might be difficult is if it's located in a weird place. You will infatuation a socket wrench and a variety of sockets to attempt to you can unscrew the exact bolts.