I am wiring an old jeep and I have a question about a relay on the after market fuse block I have purchased. The relay gets main power from a bus with other circuits on it then has a white wire which looks like it should be a ground for that circuit. I am wondering if the relay has a common main power with other circuits then goes directly to ground is that a problem?

What is the relay for? There should be a diagram on the relay so you know how to connect it. 2 terminals are for activation (usually soleniod portion of relay) and the other terminals are through terminals when the relay is active.

How many terminals are you dealing with ?