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Doc here, :pimp:

You need to find out what's all on that line..

Unplug everything on that fuse line from the device (Radio, Domes,Lighter, Ect..) and with a the fuse removed, measure from the Device of the fuse (the non hot side..) to ground..

If it is infinite, the harness is not shorted. If it reads 000, you need to inspect each wire from that line for a cut or short.

If you have a bunch of 30 amp fuses, you can unplug all the devices, install the fuse, see if it does not blow..If not, plug each item back in until the fuse blows..that is the offending item..repair or disable it.

The usual offender is a shorted lighter socket..(power to ground short in or at the rear of the socket)

What year astro van is it? I'll see if I have a Schematic for it.

Doc :pimp:
 

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Doc here, :pimp:

Sounds like the harness that runs through the steering column is cut and shorting out at the wheel / column moves about..you will need to remove it, and inspect the switch and the harness for shorts.

Or replace it If it all looks really run out.

Doc :pimp:
 
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