[Shotimes] Battery Light question

[Jeremy Grimm]

Just want to make sure that I am barking up the right tree here.

Last night the battery light came on in the SHO (89). Got the car home and 
all was fine...aside from I noticed that the idle was up around 12-1500 rpm.

This morning the car started fine...and there was not battery light. That is 
till I got about 2 or so miles down the road...poof...it comes on.

Please correct me if I am wrong, but is this a sign that the alternator is 
about to go out on me?

And if that is the case based on this info below...should I just put the 90 
amp unit back on or should I go with the 120/130? Will it matter, or make a 
diffrence? (remember my SHO is an 89)

'89-93 3.0L 5-spd 90 amp unit
'94-95 3.0L 5-spd 130 amp unit
'93-95 3.2L auto 120 amp unit

thanks for any advice/input...

-Jeremy Grimm
89 Lt. Titanium SHO
66k Org miles
77mm MAF, K&n Conical Filter,
Hyperformance Stage 1 cams,
Re-built High Flow Heads,
New Stock Clutch with 9 3/4 flywheel upgrade,
Hypertech underdrive pulleys,
155ltr/hr fuel pump, LPM,
Eibach springs, Tokico struts,
Hi-Flow Y-pipe, Dynomax Catback exhaust,
17" TSW EVO wheels, Bridgestone Potenza 225/45 ZR17s.





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