What should voltage be between alt & reg 1998 suzuki quadrunner 250
the regulator smokes when running want to replace it. is 30 volt a/c about right
The 30 volt a/c would be good enough for your 1998 suzuki quadrunner 250. However, it would be better that you get a voltage regulator to prevent it from further damages. Consult a mechanic for more inquiries.