You probably spend a lot of money on test equipment anymore. Talking to those little black boxes can be a very expensive long distance call.

Wouldn’t it be nice to run up to the local Radio Shack store and spend about $15 for enough parts to make a simple little fuel feedback tester?

You got it. We include a diagram, a parts list, and even a photo of the finished product for a Mazda fuel feedback system checker. Using three LEDs, a small buzzer, some wire and a few resistors, this magic box will allow you to check several vital functions in certain 1983-84 Mazda vehicles.

If it sounds too good to be true, take heart. Even with my fumble fingers, this whole job took less than an hour to complete. Go ahead, make me look bad.