On my 49 F1 flathead six cylinder I am thinking about changing over to a 6 volt pos ground alternator. Has anyone done this and how do you go about wiring for this change?? Thanks in advance for your answers

 

The specific wiring would completely depend upon the actual unit/system you elect to use. As per our prior conversations, I still caution against blindly going through the expense and work of installing an alternator to address a charging system issue.

 

I changed to an alternator. I am very pleased with it. Wiring is simple with the voltage regulator built in to the unit.

 

I remember our conversation and at the time I was considering changing the system over to 12 volt. I am just running some ideas through my head and trying to figure the best route to take and maybe leave it as 6 volt. I won't have the truck back from winter storage until sometime next month so it gives me time to research things and figure it out. I do respect your comments and thank you for your input

 

Can you give me an idea as to how your wired it ??

 

Basically ground the case and 1 wire to the battery side of the solenoid. Very easy.

 

Again, wiring depends upon the system. Some setups have sense wires (controls the internal voltage regulator - this goes close to the load center/fuse box, distribution point)), idiot light signals (illuminates in discharge situations - this goes to the indicator), and bootstrap inputs (alternators are not self sufficient - they need bootstrap current to energize the charging system).

 

Thank you for your advice

 

I have nothing against keeping the stock 6 volt generator and regulator, and good battery cables is a must have!.
Just for knowledge sharing... here are a few things to consider from my experiences....
It has been 35+ years since I did the 12v single wire alternator on my '51, and my memory is not as good... I am pretty sure that the wire I ran thru the amp meter metal loop was the alternator's "single wire". I would have to go back and trace wires to be certain that the "single wire" was indeed used.
I thought the amp indicator would show double the amps, but it actually reads about half compared to what the generator indicated...not sure why it shows less, but it has worked just fine all these years.
If you want to save $$, look into getting a remanufactured 12 volt 10SI alternator from the chain stores (mine was about $45 a few years ago, I think I asked for a '67 chevy impala)... and buy a 6 volt positive ground regulator from ebay ( I got the negative ground reg for about $15 few years ago). Total $60 plus the wide belt pulley I had to get. I used this set-up on another vehicle that I wanted to keep 6 volt, but I did go to negative ground so it would be easier if a radio was to added later. Its amp meter seems to read about right and this set up has worked well for about 10 years now.
good luck on your decision!

 

I have a 6 volt alternator brand new, bought it for my 49’v8. I switched both trucks to 12 volt so i have no use for it.
make me an offer

 

What does it have for a mounting bracket, the V8 is a different mounting than the flathead six

 

V8 mount

 

It will not fit, mine is a flathead six

 

Sorry I missed that in the first post

 

You might just need a different bracket?