The 8088 light module has been specially developed for Märklin locomotives of the series Ae 8/14, which are still equipped with yellow LEDs. It also adds a red tail light to these locomotives.
Swiss light change with a white lamp at the bottom right is also possible.
The module fits exactly on the place where the previous light module was placed and is plugged in there.

8088 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 on the module, so that the connectors can be wired directly to the decoder outputs.

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

Instruction Manual 8088