[DarkWolf]

title says it all.

 

[charger R/T]

try this link he builds adjustable ones and list radio shack part numbers.
http://www.fwdmopar.com/sites/dennis/howto.html
Tim

 

[DarkWolf]

Not zeners but that should work too. Diodes eat .7 volts so it looks like he is using two 1.4v and is just using the trim pot to eat up the rest of the voltage to get to 4.3v. I have a bunch of diodes laying around so I will see how it works. Just need to find somebody that sells 3/16th high pressure fuel hose and I will be able to hook up my 5th injector.

 

[minimopar]

That .7 volts varies quite a bit with temperature. For each diode you put in series, you have to add all of the tolerances together, so two in series will have double the varience. A zener will vary a bit too, but not as much, plus you can get away with using one instead of several.