[PDF] GPS-SID - Guidepoint Systems GPS-SID doc 4. Wiring and Installation 4.1 Wiring Descriptions Red – 12V+ Power Lead (fused) – Connect this lead to a 12V+ wire, preferably to the vehicle’s battery. If you cannot connect it to the battery directly, other possible sources are the main fuse GPS installation instructions for car tracking units Car gps tracking devices installation with starter disable. instructions. Car GPS installation is easy with online videos including car starter disable.