I do like fuses coming from the power supply to the relays, just in case.
Local Ford dealer had a shop fire a few weekends ago. Service department is totally shut down. Word is they had a truck on the hoist with a wiring issue bad enough they could smell hot wiring. Now how any responsible mechanic would leave for the weekend without disconnecting the battery is beyond my comprehension. How many other vehicles were in the shop and how many mechanics tool boxes are junk?