This article is all about What wires go to the starter solenoid. Turning the ignition key to START or pressing the START button activates the starter solenoid if the transmission is in Park or Neutral. The solenoid starts the engine. The starter solenoid drives the starter gear forward to mesh with the flywheel (flexplate in an automatic transmission). The flywheel is attached to the crankshaft. The starter motor turns the crankshaft, starting the engine. Push-button start cars disengage the starter when the engine begins.

What wires go to the starter solenoid and Its Function:

The starter motor’s operation is now clear. What about the starting system?

Simple circuit start-up In a normal starting system, when the driver turns the key to “start,” battery electricity flows to an underhood relay. While the neutral safety switch is in park (or the clutch safety switch is closed), the relay closes, providing voltage to the starter solenoid. Solenoid cranks engine with starter.

Many new cars don’t wire the ignition switch and neutral safety switch (or clutch safety switch) directly to the starting circuit. Instead, these switches are inputs to control modules, usually the BCM and TCM. The BCM and TCM send switch positions to the ECM via a data network. If conditions are right, the ECM operates the starter relay to power the starter solenoid ifvod.

Starter solenoid:

A standard starter solenoid consists of one small connector for the starter control wire (shown in the image as a white connector), as well as two large terminals, one of which is for the positive battery cable and the other of which is for the thick wire that powers the starter motor itself.

The starter solenoid is similar to a robust electric relay in its function. After being engaged by means of the control terminal, the solenoid will then close the high-current electric circuit, enabling the starter motor to receive power from the battery. At the same time, the starter solenoid will drive the starter gear forward in order to mesh it with the ring gear of the flywheel or flexplate of the engine.

Which Starter Solenoid Terminals Exist?

A common question asked by do-it-yourselfers is “What wires go to the starter solenoid?” A starter-mounted solenoid has three terminals and connections.

The terminal on the battery:

The terminal that provides a direct connection between the solenoid and the positive battery cable.

The starting point terminal:

The terminal that the power cable is connected to when it is plugged into the ignition switch.

The terminal for the motor is:

The connector that secures the cord to the starter motor and connects it to it.When the motorist places the ignition key in the “start” position, voltage is transmitted to the “S” terminal of the starter. This voltage provides the solenoid’s electromagnetic windings with their source of energization. After that, the windings produce a magnetic field that pulls on the starter’s plunger, compelling it to press a disc against a set of contacts in order to activate the starter. 

These contacts are meant to be attached to the “B” and “M” terminals on the solenoid. As soon as an electrical connection is made between the two terminals, current will be able to go directly from the battery to the starter motor in order to turn over the engine.