[fintstone]

A fuse blowing means too much current across it. It can be almost any component in the subsystem (or a shorted wire/component). There is some pretty easy troubleshooting that you can do to narrow it down...that doesn't even require a meter or technical skills. Just isolate the problem by removing components downstream.

1. Fusebox/Fuse

A. Check to see if you have the right fuse...25A (blue)

B. Visually inspect the wires going to the fuse (#20) for chafing or other issue.

2. Fusebox/Relay

A. With a good fuse installed, swap the relay with another black one. Duplicate conditions (drive) with switch on and see if the problem goes away (fuse does not blow).

B. With a good fuse installed, remove your Air cond relay. Duplicate conditions (drive) with switch on and see if the problem goes away (fuse does not blow). The A/C fan will not work during this test.

3. Resistor Pack in return vent

Pull back your passenger side carpet and remove the floorboard. Take a look at the blower resisters and wiring. Check for chaffed wires and moisture (or any obvious signs of a problem).

4. Blower

With a good fuse installed, disconnect the two-wire blower connector in the smuggler's box. Duplicate conditions (drive) with switch on and see if the problem goes away (fuse does not blow). The A/C fan will not work during this test.

5. Line to clutch on compressor through Thermo switch for A/C (excess temp) and Temp switch.

Disconnect green/white wire from back of A/C switch or disconnect the connector at compressor. Ensure the contact/wire will not short out against another wire (wrap it with electrical tape or similar). Duplicate conditions (drive) with switch on and see if the problem goes away (fuse does not blow). The A/C fan should work during this test but the compressor will clutch will not engage (so the air will not get cold).