Replacing Relay Harness Wires

My relay fuse box has been sabotaged by my X.... He took out
some of my relays AND the metal clamp wire harnesses they
are attached to coming out the back of the fuse box.... So i
bought the missing relays... Which are useless without the
wire things . so here's my question. Where do I get those
things .... What do i. Ask for ? Where do i go? Is it possible to
just easily replace the wires... He is a mechanic who drives a
1995 gmc jimmy... So he took them to use on His car. (The 2
cars relays are compatible) i say this because it gives you an
idea of how he extracted the wires as to how i can fix it. Hope
all this is clear . please help. Thanx.