Materials

1x 470 Ohm resistor (1/4W or greater)

1x 200 Ohm resistor (1/4W or greater)

2x Small/Red crimp-type butt connectors

1x Small/Red solderless quick splice connector

3x 20cm length of hook-up wire

1x 10cm length of 1/4" heat-shrink tubing

Soldering Iron

Wire cutters/strippers

Crimp tool

Small flat-head screwdriver

Radio removal tool (made from a coat hanger)

Instructions

Prepare the resistors

Attach wires, solder, and trim

Black - Ground

White - Input

White/Blue - Output

Add some heat-shrink to isolate everything

I pre-crimped and labelled my connectors to make sure I don't mess up

A quick primer on how to remove a stock Protege radio

This is the wire you're going to cut (Blue/Yellow)

Cut and strip the wire

Connect the circuit you made previously

Connect the "output" to the wire that's still attached to the connector (the right butt connector).

Connect the "input" to the wire that's buried in the harness (the left butt connector).

Connect your ground

Enjoy some A/C at a proper fan speed

If your A/C light is flickering (or doesn't even come on) on fan speeds 2 and/or 3 this is a simple solution that will hopefully fix it permanently. The original solution posted many years ago never really addressed the root cause of the problem. Almost 3 years later pasadena_commut came up with a solution which would definitely fix the problem, but I always thought it was much too complicated. The method I describe below is simple, cheap, and can be put together and installed in less than 30 minutes.This is just a mirror of a how-to I posted here . If you'd like to know exactly why this problem occurs and how the solution works, click here The only thing you really need to do this are two resistors that are close to 470 Ohms (yellow-violet-brown) and 200 Ohms (red-black-brown). I'll list everything I used just for the sake of completeness.These instructions are merely the process I used, feel free to get creative.This is the colour code I used for my wires:Tape works just as well...Remove the plastic covers on either side of the radio.Insert two bent pieces of coat hanger wire into the holes as shown. You'll feel them lock in place when you get far enough (don't be afraid to force them in there). Push your tools towards the doors while pulling out and the radio should just slide out. You might not get it the first time, but when you do you'll be able to steal a stock radio in less than 15 secondsRemember to remove the antenna and main radio harness connectors before proceeding.It's much easier if you remove the connector from the back of the climate control unit to give yourself more room to work.Try to cut away from the connector ... just in case you make a mistake.Not very surprisingly, the black wire in that harness is ground. Splice into it or use any other bare metal to make your ground connection. I used one of those fancy solderless quick splice connector's just because I had some handy.Seriously, 3 is the best speed.