The basic program does have relays and can be wired up like a 4/5 pin DIN relay.

I would pay for a "Automotive Electrical Package" that had updated GUI for automotive components and circuits.

Flasher Relays for Bulbs
Flasher Replays for LED
DIN style relays
All blade fuse designs
Blower motors
Blower motor relays
DC to DC converters
Radiator fans that are relay controlled and PWM controlled
Fuel injectors
Solenoids
The list goes on and on.

I would easily pay $200 for an automotive package that had all the vehicle electrical components.

This software is amazing and it can farther

I would suggest working with the Snap-On diag team to gather all the component information you need.

This will become a massive training tool that will sell.