Best Automotive Replacement Idle-Up Solenoid Relays in 2022

Last update: January 20, 2023

Are solenoids interchangeable?

Solenoids are not interchangeable. Each solenoid is designed for a specific application and has specific dimensions that cannot be changed.

Can I use a relay instead of a solenoid?

Relays are devices that use an electromagnet to open or close a switch. Solenoids are similar devices that use an electromagnet to create a linear force, like in a door lock. While a relay could technically be used in place of a solenoid, it would not be ideal because relays are designed to operate switches, not create linear force.

Can you burn out a solenoid?

A solenoid is an electrical device that converts electrical energy into linear motion. It is composed of a coil of wire that is wrapped around a metal rod. When an electric current is passed through the coil, it creates a magnetic field that causes the rod to move. Solenoids can be used for a variety of purposes, such as opening and closing valves, operating door locks, and starting engines. While they are typically very durable, it is possible to burn out a solenoid if it is overloaded with too much current. This can happen if the solenoid is

Can you just replace the solenoid on a starter?

If the starter solenoid is the only thing wrong with the starter, then yes, you can just replace the solenoid.


ESUPPORT Car Heavy Duty Relay Switch 12V 30A SPDT 5Pin Waterproof Electrical Automotive Pack of 5 Review:


My Toyota FJ only has 4 distinct wire harnesses, but the fuse panel of the FJ includes a few empty accessory slots that require these SPST relays. The switch and/or relays can thus be added to an existing vacant slot, enabling a variety of accessories. I recently fitted a second hitch to my FJ, however I never connected the towing connector. I used a little harness that cost $8 from a towing business and one of these relays in the fuse box (it's labelled). That made it possible for the electrical connections, and I needed a cheap tiny controller box to finish the system. So I purchased a $450 option from the dealer for roughly $30 (plus $80 for the existing hitch).I'm about to add another for the roof light. Only a switch and one of these relays are required; the wiring is already there in the A pillar and the dash. These have not caused me any problems.



ESUPPORT Car Heavy Duty Relay Switch 12V 30A SPDT 5Pin Wire Socket Plug Harness Waterproof Electrical Automotive Pack of 5 Review:


These relays' specifications are unclear. High 40A coil capacity—capable of handling high current applications without difficulty. What on earth does that even mean? There is no connection between the coil and "high current applications.""40A 14 VDC" is printed on the relay's top (see picture). I have never come across a relay contact with a 14VDC rating. Either it's a type-0 or the contacts are absolutely bad. If they don't work, I'll let you know.Relay coil measured current draw is 128ma @ 12V. It has an 84 ohm resistance. Over several relays, this was fairly constant.



ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Automotive Pack of 5 Review:


My Toyota FJ only has 4 distinct wire harnesses, but the fuse panel of the FJ includes a few empty accessory slots that require these SPST relays. The switch and/or relays can thus be added to an existing vacant slot, enabling a variety of accessories. I recently fitted a second hitch to my FJ, however I never connected the towing connector. I used a little harness that cost $8 from a towing business and one of these relays in the fuse box (it's labelled). That made it possible for the electrical connections, and I needed a cheap tiny controller box to finish the system. So I purchased a $450 option from the dealer for roughly $30 (plus $80 for the existing hitch).I'm about to add another for the roof light. Only a switch and one of these relays are required; the wiring is already there in the A pillar and the dash. These have not caused me any problems.



ESUPPORT Car Heavy Duty Relay Switch 12V 30A SPST 4Pin Waterproof Electrical Automotive Pack of 5 Review:


My Toyota FJ only has 4 distinct wire harnesses, but the fuse panel of the FJ includes a few empty accessory slots that require these SPST relays. The switch and/or relays can thus be added to an existing vacant slot, enabling a variety of accessories. I recently fitted a second hitch to my FJ, however I never connected the towing connector. I used a little harness that cost $8 from a towing business and one of these relays in the fuse box (it's labelled). That made it possible for the electrical connections, and I needed a cheap tiny controller box to finish the system. So I purchased a $450 option from the dealer for roughly $30 (plus $80 for the existing hitch).I'm about to add another for the roof light. Only a switch and one of these relays are required; the wiring is already there in the A pillar and the dash. These have not caused me any problems.



ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Socket Plug Wire Harness Automotive Pack of 5 Review:


These relays' specifications are unclear. High 40A coil capacity—capable of handling high current applications without difficulty. What on earth does that even mean? There is no connection between the coil and "high current applications.""40A 14 VDC" is printed on the relay's top (see picture). I have never come across a relay contact with a 14VDC rating. Either it's a type-0 or the contacts are absolutely bad. If they don't work, I'll let you know.Relay coil measured current draw is 128ma @ 12V. It has a 84 ohm resistance. Over several relays, this was fairly constant.



ESUPPORT Car Heavy Duty Relay Switch 12V 30A SPST 4Pin Wire Socket Plug Harness Waterproof Electrical Automotive Pack of 5 Review:


These relays' specifications are unclear. High 40A coil capacity—capable of handling high current applications without difficulty. What on earth does that even mean? There is no connection between the coil and "high current applications.""40A 14 VDC" is printed on the relay's top (see picture). I have never come across a relay contact with a 14VDC rating. Either it's a type-0 or the contacts are absolutely bad. If they don't work, I'll let you know.Relay coil measured current draw is 128ma @ 12V. It has a 84 ohm resistance. Over several relays, this was fairly constant.


Can you use any solenoid?

Solenoids are devices that use an electromagnetic field to generate linear or rotary motion. While solenoids can be used for a variety of purposes, not all solenoids are created equal. Different solenoids are designed for different applications, and as such, not all solenoids can be used for all purposes. When selecting a solenoid for a particular application, it is important to choose one that is designed for that specific purpose.

Does a starter solenoid need a relay?

The starter solenoid is an electromagnetic switch that is used to close the starter circuit in order to start the engine. It is usually located on the starter motor itself. The starter solenoid does not need a relay.

Does it matter which wire goes where on a solenoid?

No, the direction of the current flowing through the solenoid does not matter. The solenoid will work regardless of which way the current is flowing.

How do I choose a solenoid?

When choosing a solenoid, you need to consider the following factors: 1. The required force - This will determine the size of the solenoid you need. 2. The required stroke - This will determine the size of the solenoid you need. 3. The power consumption - This will determine the size of the solenoid you need. 4. The environment - This will determine the type of solenoid you need.

How do I choose the right relay?

There are many factors to consider when choosing the right relay for your application. The most important factor is the voltage and current rating of the relay. The voltage rating must be greater than the voltage that will be applied to the relay, and the current rating must be greater than the current that will flow through the relay. Other factors to consider include the operating temperature range of the relay, the maximum switching voltage and current, the contact material, the coil resistance, the coil inductance, and the contact resistance.

Is it OK to use a higher amp relay?

Yes, you can use a higher amp relay, but there are a few things you need to keep in mind. First, make sure that the relay can handle the current that your application will be drawing. Second, keep in mind that the higher the amp rating on the relay, the larger and heavier the relay will be.