Mazda 6 Service Manual: No.2 mil illuminates

No.1 melting of main or other fuses

No.3 will not crank

Other materials:

Mazda 6 Service Manual: Instrument cluster removal/installation
Caution When replacing the instrument cluster, the configuration procedure must be performed before removing the instrument cluster. If the configuration procedure is not performed before removing the instrument cluster, it is possible that the instrument cluster will not operate normally. ...

Mazda 6 Service Manual: Vehicle Loading
WARNING Do not tow a trailer with this vehicle: Towing a trailer with this vehicle is dangerous because it has not been designed to tow a trailer and doing so will affect the drive system which could result in vehicle damage. This section will guide you in the proper loading of your vehicle, t ...