Your fine, to clarify, I like to use 2 fuses, one for the power that turns thr relay on and off, maybe a 2 amp or less fuse. And one on the load that he relay controls, IE lights or whatever, with a fuse rated to match the load + a taste.
My aux fuse block comes off the battery and is fed via a Fusable link with a 40 amp fuse to an 8ga wire to the block. I only use those fuses for the lights or whatever. The relays are fused from the main fues panel auxillerys, either on all the time or just when the key is on, depending on the device.
I also like to use a lot of the plastic like corregated wire cover on everything.
Here is some great shots of Crash's work, he does it right! He swapped a Chevy 4.3 v6 into his 83 Toyota truck, and had to to build a custom wiring harness for it.
