Just to introduce myself I have an 84 FWD Wagon that I remember coming home brand new from the dealers

Trouble is that "Suzzy" aint so new any more. Have got away with doing most repairs myself but am stumped on this one.
When switching 'on' the warning lights all come up but are dimmed. They flicker with the pulse of the fuel pump and dim more with the application of the brake lights. Trying to find power to turn the engine over is naturally not there.
The relatively new battery holds 12+ volts but this declines to about 10 after a few minutes of connection.
Presumably this is a short but I can't find where.
I have done the following without success:
Disconnected the fuel pump (as it had been getting a bit noisy)
Pulled each fuse one by one to see if amps change
Checked fusible links
I am guessing that if I can't get the amps of drain to change from the fuses then it must be a short on something that bypasses the fuse box e.g. Hazards or brake lights but I wondered if anyone had any ideas on how to most efficiently trace the problem to the ground

Thanks
Rod
BTW Disconnected the fuel bowl solenoid a few months ago to stop a short on the ignition system.