Why does the fuel injector fuse blow when I turn my key to start?

Okay. Thanks. I'll go give that a try and let you know the outcome.

Okay, I unplugged all the injectors and turned the key. The first few times it didn't blow the fuse. I checked the injectors with my test light and one side of each lit up "ground". All were the same. Then (as I'm charging the battery) I tried to crank it again and the fuse blew everytime. So I was back where I started. I began to trace all the wires. Some with the switch on and some with the switch off. I cant seem to get the battery to turn the motor over, so I think now I am gonna try to see if the starter's pos and neg are run right and aren't touching anywhere. But that fuel injector fuse seems to be grounding out. I turned the fan on one time while I put in a fresh fuse and the fan died down right much. What about the re-call that buick had on the centurys, due to a failing "jumper-harness" going to the fuel tank? My vin # barely missed it!

Could that be from that harness going to the fuel tank? The reason that when I touched the test lite probe to the injectors while having it clamped to the pos. Side of the batt. That it lit up? Maybe the wires are grounded out further back? Did you find out anything on that "harness"? I am totally unaware of its location or anything dealing with it. You would think that Buick would have a diagram of that "re-called" part!

Okay so that jumper harness has nothing to do with this?
I will check the ecm next. I finally got hot on the pink wires on the injectors, constant power, with the key in the start position and jumping the battery with my Bronco. Thanks for the heads up on the noid light! I'll have to run down the wire for the ecm pulse ground. Now, I can't get the starter to turn over! It's been fine, now it's acting like it's locked up. You don't reckon that any starter or solenoid wire could have caused any of these malfunctions, do you? I'm still working on it and I want to thank you for your time and help! Let me know what you think and i'll keep on working on what you lead me to! By the way it's a 3300 motor (with the coil pack on the passenger side of the motor), most that I have seen have the coil pack in the rear of the motor.

I have a multimeter. Battery cables are clean & tight (put new ones on this morning). The other injector wire has a constant ground, as far as when I touch each one with the test light. I changed out the battery earlier, I felt that it may have had a bad cell. When I turn the key the starter sounds like it wants to, but just can't engage. I crossed (jumped-over) my solenoid and it would spin like crazy. If it ever tried to engage, the starter would kick in and stop it, dead in its tracks. But, when I just turn the key, it doesn't even try. I've got it up on ramps and jack stands, now. Of course, I had to use my jack to lift it up on the ramps. I just ran out of daylight, too. So, I'll have to get a jump on it again in the morning. Other than, maybe a new starter and solenoid, I'm welcoming any ideas that you have? Its been a long day. Thanks for all your help and God bless you. I'll be looking foward to what you'll have me doing in the morning, so please keep working with me on this and I'll keep you in the loop with any and all progress! I've got 3 more that I've gotta get running!