2005-2008 Chrysler 300 2.7L, 3.5L, 5.7L & 6.1L Instructions Sheet

Before removing the factory alternator you must complete the wire check as noted.
Wire Check: The original alternator is externally regulated by the computer. The original plug has two wires, one will have 12.6 volts with the key turned on and the other is the regulation wire. You will have to determine what the wires are conncted to do. This process is as follows: With the vehicle in park and the parking break on, start the vehicle. Using a volt meter, test each of the alternator plug wires. The wire that has the highest voltage is the main power for the voltage regulation. Mark or remember which wire is which for item #5 below.