Where is the voltage regulator on dodge b150 van other than fire wall?

The voltage regulator on a Dodge B150 van isn't typically located *separate* from the alternator itself, unlike older vehicles. In most Dodge B150 vans (especially those from the late 70s onward), the voltage regulator is integrated into the alternator. Therefore, you won't find a separate voltage regulator unit anywhere else on the van. The alternator is usually located on the engine's front.