21si Alternator Wiring Diagram

If there is not a wire in the s position one will have to be installed.

21si alternator wiring diagram. Delco remy alternator wiring diagram diesel. This diagram shows the simple wiring diagram for negative ground delco si series alternators the ignition switch is most commonly powered from the starter battery stud but source may vary depending on application. When replacing an external fan alternator with an internal fan alternator do not take the external fan from the original model and apply to. Warning always use proper eye protection when performing any mechanical repairs to a vehicle.

Look at the male plug connector and see if there is a wire inserted into the s position. The first just has the ground wire and the batt wire. Free acess manual ebooks 22si alternator. Replacing a 20dn 30dn 41 dn and d c.

Some 21si and 22si applications will require enlarging the ring terminals. 24si 28si alternator installation instructions note. Most will also require wiring modifications and use of the adaptor illustrated below. Wiring at alternator modification series delco 21si 22si dec 16 so i am putting a delco 22si hp amp alternator on my truck.

10459017 21si reman alternator. Identify and tag all leads when removing the old alternator and install them on the same terminals of the 24si alternator. Installation instructions for 19si 21si 22si and 23si heavy duty delco remy 10si 11si 12si or bosch k1 alternators with 11si new alternator for truck delco 22si 3 wire hookup amp see more like this. I am finding two different wiring diagrams and i m not sure which one to use.

Use the sure power connector kit 144cd to install external sense wire. This connector is manufactured so it may be inserted into the connector socket on the alternator one way only. Typical wiring diagram. Generators with a 30si alternator replacing a 27si alternator with a 21si alternator replacing delco remy 10si 11si 12si or bosch k1 alternators with 11si alternator.