Narva Sealed Rocker Switch Off/on Spdt 12V Blue Illuminated 20A Part No. 63142BL

The Narva Sealed Rocker Switch is a 12V off/on SPDT switch with contacts rated at 20A, suited to applications that need a compact, illuminated control point. It carries part number 63142BL and uses a rocker switch action with 2 positions and 5 terminals.

This switch features blue illumination with separate 'Dash Light' and 'On' illumination, plus a backup lights symbol. The mounting opening is 37.5mm x 21mm, with a mount length of 37.5mm, so it is important to confirm the dash or panel cut-out before ordering.

Narva lists push-on terminals and a sealed construction, which makes this a practical option where a tidy electrical connection and controlled panel fit are important. It is supplied as one each and weighs 0.04kg.

Key Features

• 12V only, 20A rated
• Off/On rocker action
• SPDT, 1 pole
• Blue illuminated with 'Dash Light' and 'On' lighting
• Backup lights symbol
• Push-on terminals

Specifications

• Brand: Narva
• Part No.: 63142BL
• Product type: Switch
• Voltage: 12V
• Power rating: 20A
• Switch type: Rocker
• Switch action: Off - On
• Switch illumination: Illuminated

Application and Buying Notes

Before buying, confirm that your vehicle or accessory circuit is designed for 12V operation and does not exceed the 20A contact rating. That rating matters because the switch should suit the electrical load it is being asked to control, rather than being treated as a universal fit for every accessory.

Check the panel opening carefully. This switch requires a mounting opening of 37.5mm x 21mm, and Narva also lists a mount length of 37.5mm. If the cut-out is too small or shaped differently, the switch will not seat correctly, even if the wiring is suitable.

The 5-terminal, SPDT layout is another important point to verify. SPDT switching can be useful where the circuit needs a defined changeover arrangement, but it should be matched to the intended wiring path and the way your backup light or accessory circuit is set up.

The blue illumination includes both 'Dash Light' and 'On' illumination, which helps with switch visibility and status indication. If you are matching an existing dashboard layout, confirm that the lamp colour and symbol suit the rest of the switch bank before ordering.

Push-on terminals are convenient for installation, but the wiring connectors must suit the terminal style securely. If the existing harness uses a different terminal type, plan for the correct connector approach rather than forcing a mismatch.

This switch is sold as a single piece and listed with a one-year warranty. As with any electrical part, the safest buying step is to compare the part number 63142BL, the 12V supply, the 20A rating, and the panel opening against the vehicle or accessory you are working on.

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 63142BL 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, Mount Length 37.5mm, Number of Positions 2, Item Type Switch, Weight 0.04kg, Product Group 1 AUTO ELEC ACCESSORIES.

Additional published details for cross-checking include Part No. 63142BL, Brand NARVA, Description Narva Sealed Rocker Switch Off/On SPDT 12V Blue Illuminated Backup Lights Symbol (Contacts Rated 20A @ 12V), Number of Terminals 5, Switch Action Off - On, Lamp Colour/s Blue, Number of Poles 1, Switch Type Rocker, Switch Illumination Illuminated.

Narva Sealed Rocker Switch Off/On SPDT 12V Blue Illuminated Backup Lights Symbol (Contacts Rated 20A @ 12V). Part number 63142BL should be checked first. Listed voltage is 12. Listed output rating is 20. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 63142BL, 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 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.

In the absence of a verified fitment list, the safest approach is to compare the removed unit directly with the listed product details. That includes checking the housing style, pulley layout, regulator arrangement, and any visible identification numbers before supply is approved.

The listed warranty is One Year. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Please confirm fitment by checking part number 63142BL, the 12V supply requirement, the 20A rating, the 5-terminal SPDT layout, and the 37.5mm x 21mm mounting opening against your vehicle or accessory application before purchase.

FAQ

Is this switch suitable for 12V systems only?

Yes. The listed voltage is 12V, and the amperage rating of 20A is specified for use at 12V only.

What is the part number for this Narva switch?

The part number is 63142BL.

How many terminals does the switch have?

It has 5 terminals.

What size mounting opening does it require?

The mounting opening is 37.5mm x 21mm.

Does it have illumination?

Yes. It is listed as illuminated with blue lamp colour, and it has both 'Dash Light' and 'On' illumination.

Is vehicle fitment verified for a specific model?

No specific vehicle models are listed. Fitment should be confirmed against the part number, 12V requirement, 20A rating, terminal layout, and the 37.5mm x 21mm panel opening.