Decoder installation on VT137 in TT(1:120)

Locomotive:       Tillig VT137 (02850)
Decoder:           Flieschmann w/o sound NEM651 (6 pins)- FLM-685302 w/o cable
Digital format:   DCC 
Interface:          Yes
Milling:               No
Doffculty:          Easy to medium

Decoder installation is easy except our example where we have fabric defect. After decoder installation all light are trned on and one end is ever with  leading light and other with back lights  no matter what direction the car is running on.

Opened roof shows:

You can see solder between pin 4 and 5- the reason for lighting. Desolder carefuly till pins are separated.

Testing together with unmotorized car

Assemble the roof and go to run.