Controlled Area Network Adaptors - required on older diagnostic equipment to decode newer vehicle data.
Ref: 3901810
Not required for TXT, TCX, T-DIA or included in kits 3900838 & 3900768

Ref: 3902181
Not required for TXT, TXC, T-DIA or included in kits 3900838 & 3900768

Ref: 3900555
Not required for TXT, TXC or T-DIA For Citroën and Peugeot engines.