wanna check to make sure the break is because the wiring and not the pump hanger -- new fuel pump -- won't send power & Have check wiring from relay to batter...relay gets juice and new pump...so somewhere between the hanger assembly and the relay...i think.

 

Why don't you try ohming the wire out with a DVOM Digital volt ohm meter first? That will tell you where the break is by telling you whether you have continuity or not......

 

Be sure to check the inertia disconnect switch.

 

I could not agree more with you. Yes you could run a live wire into the tank, that is how the fuel pump operates. The problem is when you have a spark- taht will create an ignition source for an explosion. Thing is that a relay is a large short circuit box that magnetically charges the switch when energized. Yes it is enclosed and therefore you probably would not have a problem, but why risk it?
Also, running a relay will tell you if you have voltage, but will not tell you if you have proper amperage. It also will energize within a close proximity of 12VDC. It is entirely possible that the relay will click off of 10 or 11VDC, or 12VDC but minimal amperage, and yet not have anywhere near a high enough amperage to operate the fuel pump. Then because the relay clicked you will have eliminated the wiring as the issue when it still may be the problem. Get a DVOM connected to it and run a resistance test, then a voltage drop test. It is the only way to truly tell what is going on back there, and much safer too.