Narva Sealed Rocker Switch Off/on Spdt 12V Blue Illuminated Front Diff Lock Symbol 63136BL

The Narva 63136BL is a sealed rocker switch with Off/On action, SPDT switching and blue illumination. It is rated at 20A at 12V only, with a 12V electrical setup and a 5-terminal layout.

This switch uses a push fit design with push on terminals and is intended to suit a mounting opening of 37.5 x 21mm. The listed mount length is 37.5mm, so the panel opening needs to be checked carefully before installation.

Illumination is provided in blue, with both ‘Dash light’ and ‘On’ illumination noted. The face carries a front diff lock symbol, which makes it a practical control option where a clearly marked illuminated rocker switch is required.

Key Features

• Off/On rocker switch action
• SPDT switching
• 5 terminals
• Blue illuminated
• Push fit design with push on terminals
• ‘Dash light’ and ‘On’ illumination

Specifications

• Brand: Narva
• Part No.: 63136BL
• Product type: Switch
• Switch type: Rocker
• Switch action: Off - On
• Number of positions: 2
• Number of poles: 1
• Number of terminals: 5

Application and Buying Notes

Before ordering, confirm that your panel opening matches the listed mounting opening of 37.5 x 21mm and that the switch body can be accommodated at the stated 37.5mm mount length. The push fit design and push on terminals are useful only when the dash opening and wiring arrangement suit this style of installation.

Electrical compatibility matters just as much as the physical size. This rocker is rated at 20A at 12V only, so it should be matched to a 12V circuit and used within its stated current rating. If the application draws close to the limit, the load should be checked properly before fitting.

The 5-terminal, SPDT layout is a key detail for wiring. It is not enough to rely on the face symbol alone; the switch must suit the circuit layout you are working with. The front diff lock symbol may be suitable where that marking is desired, but the symbol does not confirm vehicle fitment on its own.

Because no vehicle applications are supplied here, the safest approach is to compare the part number 63136BL, the switch action, the terminal count, and the mounting opening against the existing switch or the vehicle’s wiring requirements. That is the best way to avoid ordering the wrong control for the dash opening or circuit design.

The blue ‘Dash light’ and ‘On’ illumination can help with switch identification in the cabin, but the exact appearance will still depend on the vehicle’s dash lighting and installation. As with any switch, correct wiring and a suitable circuit are important for safe operation.

A one year warranty is listed. Keep the packaging and part details until the switch has been checked against the vehicle or panel, and make sure the installer is comfortable with a 12V, 20A SPDT rocker switch that uses 5 terminals and push on connections.

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 63136BL 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, Switch Illumination Illuminated, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Additional published details for cross-checking include Part No. 63136BL, Brand NARVA, Description Narva Sealed Rocker Switch Off/On SPDT 12V Blue Illuminated Front Diff Lock Symbol (Contacts Rated 20A @ 12V), Number of Terminals 5, Switch Action Off - On, Lamp Colour/s Blue, Number of Poles 1, Switch Type Rocker, Weight 0.04kg, Product Group 1 AUTO ELEC ACCESSORIES.

Narva Sealed Rocker Switch Off/On SPDT 12V Blue Illuminated Front Diff Lock Symbol (Contacts Rated 20A @ 12V). Part number 63136BL 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 63136BL, 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.

Compatibility note: Confirm fitment by matching part number 63136BL, the 37.5 x 21mm mounting opening, the 5-terminal SPDT layout, and the 12V 20A rating against your existing switch and application details before purchase.

FAQ

Is this a 12V switch?

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

What is the part number for this switch?

The part number is 63136BL.

How many terminals does it have?

It has 5 terminals.

What size opening does it need?

The mounting opening is listed as 37.5 x 21mm, with a mount length of 37.5mm.

Does it have illumination?

Yes. It is listed as illuminated with blue lamp colour, and it includes ‘Dash light’ and ‘On’ illumination.

Is vehicle fitment confirmed?

No vehicle fitment list is supplied here. Fitment should be confirmed by matching the part number, the 37.5 x 21mm mounting opening, the 5-terminal SPDT layout, and the 12V 20A rating to your application.