avoiding using relays??

Relays are cheaper. Have you priced wire lately? Also, add up the weight of all this heavy gage wire. I put a junkyard relay box in both my early A's. I actuate them with light 20 awg wires. As far as trouble-shooting, it is easy to pull a relay and jumper from 30 (sideways one) to 87 terminals to actuate whatever the relay does. I keep a spade-spade jumper in all my newer cars to do so (like bypass starter relay).