1991 Buick Roadmaster V8 5.0L cs130 High Output Alternator JS Alternators This is a direct fit

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If your alternator is internally regulated or diode added to change voltage then this controller will work for your application

1991 Buick Roadmaster V8 5.0L cs130 High Output Alternator JS Alternators This is a direct fitFitment: This is a direct fit high output alternator for the 1991 Buick Roadmaster 5. 0L. Being a direct fit, this alternator fits directly into your stock alternator location. Plug: This high output alternator comes with a 14. 8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug and play and must be wired with the one wire connection. NOTE: If you require charging at a certain voltage setpoint, we offer a selection