What does the #1 fuse control in a 73 Barracuda

[superiorcuda]

Im having some electrical promblems the #1 fuse in blowing my car,the car will not start,Im losing power to my car at random,I tried a new ECM,The ballast ressistor is fine,Im losing power to my igintion at random.I would like to know what the #1 fuse does so I can continue to trace this promblem also my tach was spiking over 10,000 rpm.My radio would turn on and off. ANY info would help Thank You! PS the wire on the back of the fuse block is a blue wire with a white tracer

[Bullitt-]

I have a 73 Dodge manual, I would think that your Barracuda & my Challenger would be the same.   #1 fise , 20amps, serves brake warning light, oil pressure lamp, & seat belt lamp/relay/buzzer                Has there been any alterations/repairs made recently?             Be sure your voltage regulator is well mounted & has a GOOD ground.          Wild hunch, see if you emergency flashers are on, off position is pushed in.       

[superiorcuda]

Thank You I have converted it back to electronic it was points.It still had the same wiring harness I bought a chrome module and I was told not to hook up the Green Wire with the Red tracer.The car has been running for a few weeks without any promblems.

[Bullitt-]

Seen various mystery problems traced to the voltage regulator. corrosion & loose mount make for loss of ground.

[superiorcuda]

Thank you, I verified it is grounded

[superiorcuda]

I would like to let you know in case anyone has this promblem.I found it to be the wire that feeds my fuse panel from the starter relay the contact at my fuse panel block was going bad.That caused loss of power to the car than the car would run off the alternator causing spikes to my radio and Tach light.It had nothing to do with the #1 fuse Thanks

[Bullitt-]

superiorcuda, YOU MIGHT WANT TO REVIEW THIS TOPIC.
http://www.cuda-challenger.com/cc/index.php?topic=20307.0