Disconnect the negative battery cable.
WARNING:
Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.
NOTE:
Always spray the starter solenoid electrical connections with penetrating oil prior to removing the nuts. Use extreme care to prevent cracking the solenoid end-cap, which will allow moisture to corrode the solenoid contacts.