I've lurked in the FTE forums for over a year now, smoothly replacing my clutch, throwout and doing electrical work all by just reading what's posted.

Alas, THIS one won't stay fixed. I've replaced the regulator, alternator, battery, cables and belt and even added a dedicated ground wire from the battery negative straight to the regulator frame ground.

This flashing light was accompanied by ALL the electrics dimming in sync with the ALT light. Turning stuff on (headlights and/or interior fan, wipers, etc) made the ALT light go out (or very dim) but the flickering lights continued, to the point of making night driving dangerous

When the pulsing warning light (as in flashing at a FREQUENCY even, something like 1.5 times a second regardless of engine RPM) persisted, I removed the RFI capacitor (as advised in another post) and the problem disappeared for some three months now.

But alas, it came back yesterday, random flashes at first, then pulsing at =any= engine speed as before

Argh

I bought another regulator, will likely install it tomorrow.

My 'lectronics eduction tells me there's no such thing as "too" much current reserve on a thing such as a truck battery - but in this thread someone mentioned too much load on the system. I bought the biggest battery WalMart had, is it somehow incorrect and killing my regulator?

Oh, she's a '77 2WD F150 351M NP435, manual steering (don't need no steenkin' gym!) and runs okay for a 28-year-old

I just had a car stereo in a van I bought cause a headlight switch to fry (previous owner had powered it off the dash light circuit =ahead= of the switch) and I'm contemplating ripping out the Tandy thing in my dash next.

...but open to suggestions

 

Buy a quality voltage regulator.

 

Also make sure that you have a good chassis to engine ground. There is usually a ground strip from the rear of the intake to the firewall somewhere.