avoiding using relays??

The main advantage of relays is lessen the likelihood of cabin fires ( burning the beans/beings ).
When the relay is close to the item it supplies those heavy gauge high amp conductors are not only shorter but outside the cabin as well.
The pizzy little wires and inline fuses are comparable to manually operated switches inside the cabin that signal the relays.
The larger OEM wires though the OEM bulkhead connector are a very good example of what you don't want.