The 8086 light module has been specially developed for Märklin locomotives of the Re 460 series, which are still equipped with bulbs. It extends these locomotives not only with red tail lights, but also the possible signal patterns.
The module fits exactly in the place where the bulbs used to fit and is glued in place.
Version with warm white LED.

8086 connections (pads):
D+ Decoder Plus
Lv A light
Lh Single LED white bottom right
Aux Red LED

Decoder connections and wire colours (according to NEM standard):
Blue Decoder Plus return conductor functions
White F0 forward Light front (Lv, F0v)
Yellow F0 backward light rear (Lh, F0h)
Green Aux1 Function key 1
Purple Aux2 Function key 2

All LEDs are led over series resistors, so that the connectors can be connected directly to the decoder outputs.

The light module is sold individually, you need two pieces for one locomotive.

Instruction manual 8086