2016 Pete 587 Starter interrupt relay clicks with the engine off.

No problem.

Also, keep in mind. If the wire is crimped/damaged inside the harness, it's likely that other wires will have been damaged. You may solve this problem now, but you run the risk of having other problems if you don't find out WHY it happened. For example, the grommet could've came out, and the harness is rubbing against the metal firewall. Be prepared to splice, butt, and shrink wrap.

 

Going to the input, yes. Depends on which fuses, too. Some components down range may be powered on at all times. The component gets switched on/activated when the circuit is closed. That depends on the setup (in the schematic). Not all fuses and their circuits are gonna act the same.

With the key off, probe the input of the relay you're working on. There should be power. Find the output going to the starter. There should be no power. Turn the key on. There should be power at the output.

 

If the relay is normally closed (allows power to the starter at all times), it's supposed to do that.

Next step, turn the key on, and see if the power is switched OFF at the starter.

 

If the harness is going through the door jam, it could be binding in there. Put a test light on the starter and have someone open and close the door. See if the light goes out.

 

No brother, but I'm working towards moving in that direction. Hence why I'm on the trucking forum (to move).