fuel pump on all the time (when keyed) is that ok?????

okies I am fed up, my car is a 92 4cyl. mustang convertable, now this is my problem everytime my engine gets hot, the car won't turn on after it's turned off and well also sometimes it stalls. I replaced the fuel pump and the stalling got a little better, however it is not really fixed. I've seen aftermarket products that wire around it, but that means that the fuel pump get's full 12V all the time when the engine is turned on, I dunno if the ecm(icm) or ecu is supposed to adjust the voltage on that fuel pump, however I do know the dam relay is inside the ecm(icm) now I look at that black box and well it doesn't look like it opens up. so here are my alternatives:
A. crack open that box somehow
B. find a nice little relay socket (I got like five wire harnesses from other cars sitting around so I should be able to find one and then just relay the fuel pump directly from the battery and wire it directly into a switched line and then the battery and on the other end the inertia switch. (would still be safe from accidents), but otherwise the ecu would lose control over the fuel pump.
What do you guys think?
terramir

yeah it's integrated inside the icm lol three relay's inside of there now which one regulates the fuel pump :S
if I could find out which one is broken it's just a matter of soldering
terramir
PS: since I have no money right now would making an aftermarket fuel pump relay be soo bad? Cause I dun have the money right now to buy an icm, just hook that up a constant 12V from an always on circuit to the intertia control switch through a relay that is keyed?

yeah but there are 6 wires going to that dam constant control relay module, so I really dun have a clue which one of those to splice into, thinking just connect to ignition and the ground on 85/86 and connect 30 to the battery and 87 to the inertia switch. heck it will run all the time when the key is turned, but your car hasn't blown-up yet so what to worry right
terramir

my car runs just fine now, I slapped a relay triggered by the keying of the car, and well battery to fuel pump, the problem with the constant control module is that I can't duplicate it since I dunno what wire is the one that switches and what wire supplies the voltage to the fuel pump. So for now untill I solve that mystery, it's staying like this. to all of you that helped.
thanx
terramir