How to wire a Delco SI series alternator?
How to wire a Delco SI series alternator?
We are commonly asked how to wire the Delco SI series alternators upon maintenance or upgrading from an older generator. While this series of unit often runs as a self exciting one wire, agricultural applications also used 3 wire connections to the alternator.
What do you need to know about alternator ground connection?
The main points to remember are both the #1 and #2 regulator connections are BAT+ with key on. The #1 regulator connection must be off with ignition off to prevent battery drain. Alternator ground connection is the casing, grounding back through bracketing and eventually through battery ground cable.
How many wire connections does an alternator need?
While this series of unit often runs as a self exciting one wire, agricultural applications also used 3 wire connections to the alternator. If you are looking for the no charge indicator light on the dash to function as well, this should help determine which connection to use.
Can a Balmar alternator be mounted on any engine?
Alternator Mounting Due to the many domestic and international configurations of engine/alternator mounts, and factors such as year and location of engine manufacture and marinization, Balmar cannot guarantee a drop-in replacement in every engine application. Choose the model that most closely fits your application.
What kind of wiring does a Monaco Coach have?
Got to admit that the wiring on the Monaco coach’s run me in circles at times. That should give all the members a good baseline of information to start solving your issue. Rich.
How does the battery wire connect to the alternator?
The battery positive wire connects to the starter. The voltage sensing wire connects to the battery, and the ignition wire connects from the alternator to the key switch. All of these wires pull power from the battery through the alternator to keep the electrical systems running and the car operating.
Where is the voltage sensing wire on a GM alternator?
The Number 1 wire on the 10- or 12-SI is connected to the charge warning light on the dash. The Number 2 wire is what is called the voltage sensing wire. When converting from an external voltage regulator to an internal such as the 12-SI, many enthusiasts merely connect the Number 2 voltage sensing wire directly to the output terminal.
Are there any disadvantages to one wire alternators?
Another minor disadvantage to one-wire alternators is the rotor in the alternator must achieve a certain speed to self-excite. This usually requires the driver to rev the engine to increase internal voltage to sufficiently excite the alternator to begin charging.
