DIFFLOCKEDTHE REGISTRY ELECTRICAL · LAMP
LampElectricalCommonNSN 6220-99-803-2620

Convoy light No.1 Mk I (FV14933)

Lucas · United Kingdom · to 2006

The small shielded lamp bolted on an L-bracket to the inside of the rear crossmember behind the NATO hook, throwing a dim beam down onto the white-painted differential so the vehicle behind can keep station in a blacked-out convoy; rotating the shield opens a rectangular slot that turns it into a number-plate lamp. Selected from the Lucas six-way convoy/blackout switch (PRC2089) on the dash, with a 24 V 6 W or 12 V bulb.

SourcesMore electrical
PHOTOGRAPH WANTED
to 2006MADE—PERIOD PRICECommonRARITY13LAND ROVER MODELS4SOURCES

Description

The small shielded lamp bolted on an L-bracket to the inside of the rear crossmember behind the NATO hook, throwing a dim beam down onto the white-painted differential so the vehicle behind can keep station in a blacked-out convoy; rotating the shield opens a rectangular slot that turns it into a number-plate lamp. Selected from the Lucas six-way convoy/blackout switch (PRC2089) on the dash, with a 24 V 6 W or 12 V bulb.

Military models only

Rarity. Standard on every British military Series and Defender and the 101; RTC4771 was a Land Rover parts-counter item until discontinued (Rimmer Bros lists it as no longer available) and originals and reproductions are still traded.

Record: 4 sources; designation recorded; no price recorded; production dates not established.

Specification

MAKERLucas (to MoD FV specification), later Land Rover part RTC4771, United Kingdom
DESIGNATION / PARTPanel light, convoy light, No.1 Mk I, FV14933; Land Rover RTC4771
NATO STOCK NUMBER6220-99-803-2620
MADEto 2006
RARITYCommon — Standard on every British military Series and Defender and the 101; RTC4771 was a Land Rover parts-counter item until discontinued (Rimmer Bros lists it as no longer available) and originals and reproductions are still traded.
MOUNTINGL-bracket on the inside of the rear crossmember, directly behind the NATO pintle
BULB24 V 6 W SCC clear (NSN 6240-99-995-2253) or 12 V
MODESconvoy light or number-plate light by rotating the shield
SWITCHLucas 6-way convoy light switch PRC2089 / 547162
CATALOGUE109 Military Parts Catalogue, code 22715, February 1978
ERA NOTEin service around 1955; introduction date not sourced

Fitment

Military models only

Sources

yumpu.com/en/document/view/54440488/109-military-parts-catalogue-ocr/306forum.militarylightweight.co.uk/viewtopic.php?t=2193rimmerbros.com/Item--i-RTC4771lrseries.com/Land-Rover-Series-1-2-3-MilitaryEvery source above was fetched and read when the record was made.