dodge voltage reg question....

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dodge voltage reg question....

Postby jethro » Mon Apr 11, 2016 10:58 pm

A strange little observation leads to a question.....
have an old school (1980's and 90's) dodge voltage regulator controlling the dodge generator on my f-350.
All hooked up except for the green wire (power wire which supplies 12 V to regulator)
When I put this wire on battery + directly- the output brings the battery from about 12.4 to about 14.6volts.....
Measured current at about 3-4 amps. (fluctuating a little bit)

The instructions said it needed to be only on when the key is on.......
So I tried a wire in the PCM that appeared to be a power supply wire. It could only supply 600 ma and didn't turn the gen on.

So them I looked in the FICM harness (main power for the fuel injector system (which I don't have anymore (yeah!) )
Tried this wire...... this wire had voltage about 2/10 of a volt less than the battery. BUT- when I use it for powering the
voltage regulator the charging voltage is about 15 volts or a little more.......

So how does it work that less input voltage results in higher output voltage ? Is it supposed to work that way ?

There is a main power relay near the beginning of the under-hood harness----- that should be a good high current source -

any explanation of the voltage behavior ?

Tim
jethro
fuel screw!!!!
 
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Joined: Sat Mar 08, 2014 12:32 am

Re: dodge voltage reg question....

Postby jethro » Mon Apr 11, 2016 11:12 pm

maybe I have answered my own question - somewhat - maybe not entirely----

http://ramchargercentral.com/electrical ... ng-system/
jethro
fuel screw!!!!
 
Posts: 411
Joined: Sat Mar 08, 2014 12:32 am


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