I agree with Bill that these small lights are standard industrial and everywhere available. This is not the case with 2 bigger warning lights on the SM for the gas solenoid and the same on the sea cooling water intake near the entrance. These lights are not anymore in production. I will contact Maude Touillet about these (broken red cover glass).
By the way are you Dutch? I just bought my SM Kavanga and hope to bring her to Spain or Portugal this summer after a replacement of the standing rigging
SM2k #351 Kavanga