What does Harley system relay do?

What does Harley system relay do?

Yes the system relay gives power to the fuel pump and the injectors. The ECM triggers the injectors by grounding them and activates the system relay by grounding it also.

What would cause a Harley not to start?

If the engine doesn’t crank, it could be because of a failure at any of those stages, a weak battery, or a bad starter. If the motor cranks and still won’t start, then it is likely a fuel or spark issue. A few tests can be performed to quickly track down the problem.

How do I test my start button on my Harley?

Unplug the connector and probe it for B+ while pushing the start button. If it shows volts the start button is good. Then take a jumper wire from the battery positive terminal to that same connector plug on the starter, the starter should spin and engage the engine (crank over).

How do you check a relay to see if it’s bad?

The only tool required to check a relay is a multimeter. With the relay removed from the fuse box, the multimeter set to measure DC voltage and the switch in the cab activated, first check to see if there are 12 volts at the 85 position in the fuse box where the relay plugs in (or wherever the relay is located).

What is P&A fuse on Harley?

P&A fuse (2): A 15A fuse that protects the circuits of any installed accessories. Battery fuse (3): A 15A fuse that protects all the circuits. If the battery fuse fails while the engine is running, the engine will continue to run and critical circuits like the ABS brakes will continue to function.

How do I know if my starter relay is bad?

How To Tell If Starter Relay Is Bad?

  1. The Vehicle Is Dead. The most obvious symptom is a completely silent car that does not respond when you turn the ignition key.
  2. Starter Making Clicking Sounds.
  3. Occasional Failures In Starting The Vehicle.
  4. Starter Does Not Get Switched Off.

Why would a motorcycle died while riding?

There are a few reasons a bike can shut off while riding. Low fuel or a faulty battery are the main reasons a bike will shut off while riding. But it could be a few other reasons as well, all of which are linked to either fuel or electrical issues.

When I try to start my motorcycle it just clicks?

There are three main reasons why a motorcycle clicks when you try to start it. The first and most common reason is because of a dead battery. The second reason could be due to a bad starter. The third most common but less likely reason the motorcycle is clicking could be due to a seized engine.

How do I know if my starter relay is bad on my Harley?

The most obvious warning sign that a problem with the starter relay exists is when the vehicle won’t start when you engage the ignition process. Starter stays on after engine started. Intermittent issues starting the vehicle. Clicking sound coming from the starter.

What happens when a relay goes bad?

If the relay fails it will cut off power to fuel pump and ignition system, which will result in a no power, and therefore no start condition. You may find that turning the key may power on the accessories, and may even crank the engine.

What does a starter relay do on a Harley Davidson?

Harley Starter Relays In a motorcycle, a starter relay acts as the connection between the battery and the motor, and it helps create reliable startups without draining the battery. If your starter is clicking often before starting or doesn’t start at all, then you’ll definitely want to check out your starter relay.

What is the switch on a Harley Davidson?

There are two , one thats got constant B+ and the other is switched thru the key . The switched B+ is a square connector with a rubber plug in it , the constant B+ is a grey plastic plug that has a terminated connect in it that gets removed .

Where is the Accy on a Harley Davidson Road King?

Depending on what year Road King you have , the accy. connector is located under the seat in front of the battery box . There are two , one thats got constant B+ and the other is switched thru the key .

Where is the starter relay on a 1986 Softail?

Hello, all! Can someone please tell me where my bike’s starter relay is located? Some have said it’s back by the battery compartment, others have said it’s between the fuel tanks the only stuff I saw between the fuel tanks were mainly a bunch of wires…..my bike is a 1986 Heritage Softail (1340cc Evo).