RED & AMBER (through red lens) PCB only for Replica Lucas L542 lamp suits 289 and 427 AC Cobra

Out of stock

Replica Lucas L542 lamp

Red / Amber Stop, Tail and Indicator LED

Shines Amber Indicator through Red lens,  12V  negative earth


Does not include lens bezel or seal

Note, we usually have these in stock, but on occasion we build to order from our larger stock of kits.

If stock level is showing out of stock, please contact us for a delivery date.




  • Pair of PCBs to fit original or replica lamps
  • 12V negative earth Indicator and stop / tail
  • 8 x 1.0 Watt Amber LED for Indicator
  • 5 x 1.0 Watt Red LED for Stop / Tail
  • Stop lamps under driven for tail light
  • This board shows Amber indicator through Red lens
  • (indicator and brake light functions are swapped for maximum direction indicator brightness)
  • Aluminium circuit board for heat dissipation
  • Reacts faster than an incandescent bulb. (LEDs reach full brightness almost instantaneously, Incandescent bulbs can take 1/5 second)


Very Low Profile requires minimal hole in the body panel

Fits original holes, but does not require a large cut out in the panel if fitting to a new, pattern or kitcar panel

Will require the fitting of a brake light wire for vehicles with a Lucas DB10 relay unit. We offer the correct colour cable as an optional extra.


lens seal and trim not included

these units use special Amber LEDs more than twice the brightness of our other rear lamps to show a good amber through the red lens.

The units are built onto aluminium circuit boards to dissipate the extra heat generated by all those LEDs!

Fitting LED lights will affect the flash speed of older bimetal flasher relays. Optional extras on this listing are hybrid flasher relays to correct this problem. They will flash at the correct speed with any combination of bulbs and LEDs. A hybrid flasher with built in buzzer is available also. OEM Flashers are two pin, the Hybrid flasher is three pin, requiring an Earth (ground) connection. For your convenience, we offer a black lead with suitable connectors as an optional extra.


*  note,

we do not expect the LEDs to fail, but it would be stupid to ignore the possibility so we are making a set of two of each colour available to put in a drawer and forget.



The original Aces, prior to Cobra production, used the rectangular Lucas L542 rear lights, which were borrowed from the Hillman Minx - the same lights were also used on some Jensens and London taxis. This type continued to be used on the 289 , nearly all the 289 Mklls, the 289 FIA, the early 427 Mkllls and all 427 SCs. LaterMkllls and a few of the lastMklls were fitted with lights borrowed from the Hillman Imp. These lenses are road legal on vehicles first registered before 1974

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