OEX Carling Style Rocker Switch On/off Spst Red Illumination 12/24V 20A ACX1974BL

The OEX Carling Style Rocker Switch is an illuminated on/off switch with SPST action, rated at 20 amp and suited to 12 or 24 volt systems. It uses a 3-terminal layout and is supplied under part number ACX1974BL, which is the most useful identifier to check against your existing switch or wiring setup.

This switch has red illumination and a two-position rocker action marked On - Off - SPST. The mounting hole size is 21 x 37mm, so it is important to confirm the dash, panel, or accessory cut-out before ordering. It is sold individually as each.

For buyers replacing a worn or damaged switch, the key points are the voltage rating, 20 amp capacity, 3 terminals, and the 21 x 37mm mounting hole. Those details matter more than appearance alone, especially when matching an existing Carling style switch in an auto electrical setup.

Key Features

• OEX Carling style rocker switch
• On/Off SPST action
• Red illuminated
• 20 amp rating
• 12 or 24 volt use
• 3 terminals

Specifications

• Brand: OEX
• Part No.: ACX1974BL
• Product type: Switch
• Switch type: Rocker
• Switch action: On - Off - SPST
• Number of poles: 1
• Number of positions: 2
• Switch illumination: Illuminated

Application and Buying Notes

Before buying, compare the part number ACX1974BL with the switch you are replacing and confirm the physical layout of the panel opening. The stated mounting hole size is 21 x 37mm, so the switch should only be considered a match where that cut-out and the surrounding panel space are suitable.

The electrical ratings are just as important as the size. This switch is listed at 20 amp and 12 or 24 volts, so it needs to be used within those limits and in a circuit that suits a 3-terminal, 1-pole, On - Off SPST rocker arrangement. If your original switch uses a different terminal count or switching action, it may not be interchangeable.

Red illumination can be useful when the switch is fitted in a dark cab, dash, or accessory panel, but illumination alone does not confirm compatibility. Check the wiring requirements, terminal spacing, and the space behind the panel before installation, particularly where access is limited or existing loom lengths are short.

This is a practical replacement-style switch rather than a vehicle-specific kit, so the safest approach is to match the part number, confirm the 21 x 37mm opening, and verify that the circuit load stays within the 20 amp rating. If you are unsure, compare it against the removed switch and the vehicle’s electrical requirements before fitting.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number ACX1974BL helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type SWITCH, Unit of Measure EACH, Warranty One Year, Power Rating (Amp) 20, Voltage 12 or 24, Number of Poles 1, Switch Type Rocker, Switch Illumination Illuminated, Product Group 1 AUTO ELEC ACCESSORIES, Part No. ACX1974BL.

Additional published details for cross-checking include Brand OEX, Description OEX Carling Style Rocker Switch On/Off SPST Red Illumination, Number of Terminals 3, Switch Action On - Off - SPST, Lamp Colour/s Red, Number of Positions 2, Item Type Switch, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

OEX Carling Style Rocker Switch On/Off SPST Red Illumination. Part number ACX1974BL should be checked first. Listed voltage is 12 or 24. Listed output rating is 20. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number ACX1974BL, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a switch in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 or 24 and output 20 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Where no verified application list is available, the part number, mounting details, connector style, and published specifications should be used as the primary selection criteria.

Compatibility note: Confirm compatibility by matching part number ACX1974BL, checking the 21 x 37mm mounting hole, and verifying the 3-terminal, 12 or 24 volt, 20 amp On - Off SPST specification against your existing switch and circuit.

FAQ

What type of switch is this?

It is an OEX rocker switch with On - Off SPST action, 1 pole, and 2 positions. It is identified by part number ACX1974BL. For this listing, part number ACX1974BL is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

What voltage does it suit?

The switch is listed for 12 or 24 volt use. Always match that rating to the system it will be installed in. For this listing, part number ACX1974BL is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

How much current can it handle?

It is rated at 20 amp. The circuit should stay within that limit. For this listing, part number ACX1974BL is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

What size opening does it need?

The stated mounting hole size is 21 x 37mm. That cut-out should be checked before ordering or fitting. For this listing, part number ACX1974BL is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

How many terminals does it have?

It has 3 terminals. For this listing, part number ACX1974BL is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

Is the switch illuminated?

Yes. It is red illuminated. For this listing, part number ACX1974BL is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.