Re: 50A igniton fuse keeps blowing
The starter power itself is not fused, it could be a problem with the starter solenoid or wiring between the ign. switch and the solenoid, [possibly the starter relay or A/T gear position switch if it's an automatic, or the starter cut relay if you have OEM security].
I would start by doing a bypass jump, using a jumper with a 30A fuse in it, if fuse blows the solenoid is bad if not, leave the solenoid unplugged and unplug the ign. switch and do a continuity to ground test on the starter lead, [black/white], from both ends if it is a standard, either end if an auto.
If there is continuity to ground the starter lead has a short, if it is a standard and continuity is found at the ign. switch end, the problem is before the starter relay, if it is from the solenoid end the short is after the starter relay, if your car is an auto you will need to put shifter into a gear or unplug the A/T gear position switch and test starter lead from both ends to narrow down the location of the short. 94