Is a starter relay switch?
A starter relay closes contacts to switch on a larger current from a small current coming from the ignition switch circuit. In this way, it acts as a switch for the starter solenoid and the starter motor in an automotive.
How does the Starter Cable connect to the battery?
So, when power comes in on the Ignition Switch wire the relay bridges the Battery Cable to the Starter Cable terminals, sending power to the starter. In the picture on the right, the other end of the Starter Cable connects to the big terminal on the PMGR starter.
Where does the starter wire go on a 1980 Ford truck?
As the 1980 – 86 Ford trucks were originally wired, the relay (aka solenoid) gets 12v in on the Ignition Switch wire in the diagram below (borrowed from this page on FSB), and the relay then bridges the Battery Cable to the Starter Cable terminals, spinning the starter.
Where is the Starter Cable on a bullnose?
As shown in the picture on the left, below, the fender-mounted starter relay has the battery cable on one side and the starter cable on the other. So, when power comes in on the Ignition Switch wire the relay bridges the Battery Cable to the Starter Cable terminals, sending power to the starter.
Can a PmgR relay be used as a starter?
In other words, both the fender-mounted relay and the PMGR starter’s relay have to carry the full current of the starter. But, with a bit of wiring we can use the fender-mounted relay to just pull in the starter’s relay, thereby significantly reducing the load on the original relay.
What’s the best way to replace a starter relay?
Make sure that it is not burned and make sure that the small wire from the ignition switch is not loose. Step 1: Put on safety glasses. Do not work on or around a battery without any eye protection. Step 2: Hook up a Sun Vat-40 or Ferret-40 to the battery. Turn the knob and load the battery up to 12.6 volts.
What happens when I bypass the starter fuse / relay?
When I bypass the starter fuse/relay the car turns over like a charm no problem whatsoever, the starter does not hesitate. I tested all the wiring and voltage for the starter and the solenoid and those things you mention and they’re fine. The battery works fine when charged/jumped. It’s just been sitting for a few weeks.
What’s the difference between a starter relay and solenoid?
While both components form part of the starting system, they are very different. The starter relay switches on the current that activates the starter solenoid. The starter solenoid, on the other handed, closes the switch for the starter motor and usually mounts on the motor.
What happens to the armature of a starter relay?
When a current passes through the coil of a relay, the armature moves to increase the flux. When the current is switched off, the armature contracts. In a starter relay, when a key is turned in the car ignition, the movement of the armature closes the pair of heavy contacts that serve as the bridge between the battery and the starter motor.