Connexion line 1 for Engine control unit for Trex Skyteamla 50-125cc EURO4

For engine control unit for Skyteam 50-125cc:
- Skyteam ST50-6 (E4)
- Skyteam ST125-6 (E4)
- Skyteam S50-8/8A (E4)
- Skyteam ST125-8/8A (E4)
- Skyteam ST125-11 (E4)

CAUTION: only for Euro4 engines