anyone know how many watts the power point plug on 96 ford windstar can handle? as I got 400watt dc/ac power convertor.?

Amps X Volts = Watts. Check the fuse for the circuit and multiply that rating X 12 volts to find the max watts the circuit can safely handle. For example, if the fuse is a 15 amp...times 12 volts = 180 watts. That is the most the circuit will handle without blowing the fuse.

A 400 watt converter would need around a 35 amp dedicated circuit with proper fuse and wiring...40 amp would be better to allow a safety margin of around 20 percent capacity to avoid overheating wiring, blowing fuses from power spikes, etc.. 400 watts / 12 volts = 33.3 amps.

What is the input amperage spec? 12 volt sockets usually have a 20 amp circuit.

Hi well you can't plug that in as the socket is only 120watts. it will blow the fuse so you need to connect it direct to the battery. however if the battery is old then you might find the car impossible to start as this will drain the battery as it will use. 35amps in a second.

Dddd