"P" Terminal (Phase Connection) - This terminal sends a signal to a relay, frequency sensing tachometer, or computer indicating alternator speed. This terminal may not be used - this is normal.
"L" Terminal (Charge Light) - This terminal is fed from the ignition through the charge light on the dash. This connection turns the alternator "on". Without a signal to turn "on", the alternator will not charge. However the "I" terminal may be used to turn this alternator "on", as described, instead of the "L" terminal. Please note that if there is a connection on the "I" terminal there will be NO connection on the "L" terminal.
"I" Terminal (Ignition) - This terminal is fed directly from the ignition switch to turn the alternator "on". Without a signal to turn the alternator "on", the alternator will not charge. However the "L" terminal may be used to turn this alternator "on", as described, instead of the "I" terminal. Please note that if there is a connection on the "L" terminal there will be NO connection on the "I" terminal. If there is a connection on the "L" terminal AND the "I" Terminal THEN the "I" terminal is NOT an "I" terminal but an "F" terminal (confused yet??).
"F" Terminal (Field Monitor) - This terminal sends a signal to the computer telling it how much field current is flowing (therefore the computer knows how hard the alternator is working). This terminal is not always used AND can only be used if the alternator is turned on by the "L" terminal.
"S" Terminal (Battery Sense Connection) - This terminal is larger than the others and provides the alternator with a precise battery voltage reading however, this connection may not used. When not used, the alternator will automatically sense battery voltage at the battery post.
According to the Tech Reference, an '88 Oldsmobile Firenza 2.0L with A/C and EFI will yield the desired "clocking" for a CS130 alternator on a small block Chevy long water pump application.
In my search to cross reference the applications to find more abundant vehicles to grab these alternators off of (as we know GM is very good at interchangability) I came across this list:
There may be more applications out there as I picked my CS130 alternator off a late '80's Chevy truck. I did have to drill, tap and heli-coil the top mounting hole to allow mounting up the alternator and provide means of adjusting tension. So keep your eyes peeled for more applications!
Copyright � 2003-2006
NO PHOTOS, TEXT AND/OR CONTENT USED THROUGHOUT THIS PAGE MAY BE REPRODUCED,
TRANSMIITED OR USED IN ANY MANNER WITHOUT THE EXPRESS WRITTEN PERMISSION OF THE
COPYRIGHT OWNER.