Ok pretty basic question:

How many volts should I be getting off the battery while it is off?
How many while car is running?
How many while car is running with everything going?

> How many volts should I be getting off the battery while it is off?

12 volts, more or less if the battery is fully charged and in good condition.

> How many while car is running?

13.5-14.5 volts, if the regulator is working correctly.

> How many while car is running with everything going?

13.5-14.5 volts, if the alternator is big enough for all the stuff you have. If it drops below this only under load, the alternator is probably defective, but it might also be too small. The original 35 amp alternator is fine for most unless you add big lights and super-high-power stereos.

geez, mine only had a 25amp alternator, that was pumping out 15 with the lights off and then 11amps with them on.
its now rectified with a big 55amp alternator and new regulator. runs like a dream, just have to reinstall the stereo

mine makes 15 when running, dunno why but thats higher than ive ever heard before,

Yeah the 35amp alts are crap with big stereo's all my lights and headlights dim with the bass in my coupe, thats even with it turned down, I'm soon to upgrade though with my CA18 alt should be good
Cheers
Damo

wots the 55 amp alt off? is it a straight swap, does the new pulley have the same groove pattern as the original amp?

dont know what it is off but it is still a lucas and bolts straight in. pully is different but because its still a lucas, just swaped them over (they were same size just diferent belt setup). All i know is its good

speaking of altornators i got a brand new one like 6months ago... it is a Hitachi but as i didnt know anything about cars then i dint even ask what amp they were putting on.

question is what amp is my ALT? (it is looks bigger than a standard datoo alt)

numbers are: LT150-23b75s
23100-u5802

could the 75s, be the 75amp?

Probably not 75 amp...

I think it is one of the 35 or so amp ones...