I would highly recommend the inline fuse. Kinda fuzzy picture, but you can see the $35 Autozone inline fuze on the shock tower. If it trips, you just lift the hood and reset it, and back on the road. Keeps the 130A alternator from melting everything else i the car in case of a malfunction.
Do you have the alternator in hand? If so, put the model number on google and see what it is rated at. If I recall correctly, I asked for one for a 93 mustang, v8.
This info from a foxbody site on the conversion but should be relivent in this thread as well, esp if you have a serpentine setup. These cars have 3G 130A clocked at 12:00 and will require fox bracket notched: 94-95 GT Mustang 94-06 V6 Mustang 94-97 3.8L Thunderbird **NON-S/C** 94-97 V6 t-bird These cars have 3G 130A or 110A in a larger case clocked where connector will be jammed under the bracket. You can make these work, but they're not the ideal 3G for fox app upgrades: 93/94-99 3.0L Taurus (not 3.8L, check the 93, this may or may not have 3G) 95-98 3.0L Windstar Small case 3G 95A with correct clocking and correct regulator. Some have incorrect 2 groove pulley, some have correct 6 groove: 92-94 3.0L Aerostar (early 92s were 2G not 3G, so check before you buy) 96-97 F series pickup with a 7.5L Some of these use larger cased alternator, but can work, not all 3G's were 130a, see info here Other, not sure of their clocking or output: 94-04 3.8 (-98? small case, 95a?) 3.8L 94-97 T-bird/cougar 94-96 F-150 5.0L and 5.8L came with both 130A and 95A
Also 4.6L pieces WONT work. Theyre 3g but the rear case is different. I used one off a 93 taurus. Then i sold it, its living now in a ten second fox body