Question about 1990 Mazda MX-5

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Reverse light does not turn on

When i put my miata in reverse the white lights does not turn on

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First check the bulbs, then the fuse. if it is not either of those then it might be the switch that is activated when you shift to reverse. this is usually a plug on the side of the transmission. there will just be two pins in this plug. to test and make sure that everything else is working you can unplug this plug and use something like a paper clip to make a connection between these two pins on the side of the plug that you unplug from the transmission, not the transmission side. if connecting those two pins together makes the light come on then the problem is inside the transmission and it would have to be taken apart to fix it.
hope that helps

Posted on Jun 02, 2009

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Check the bulb if the tiny wire called the element is broken inside the bulb it is blown if it isn't then it is a broken circuit problem.
if you check the bulb and the bulb is good then you will need a test light.
when you have a test light connect the wire on the test light to a ground.(anything with naked metal ie(a bolt or screw or trunk lid) just find a good ground source. then place the test light prong into socket touching the little metal bumps inside of the light socket (make sure the car is in reverse with the key on and not running.
if the light comes on you have current. if not check the fuses.
they are usually located under the dash on the drivers side, you can use the test light to test the fuses without pulling them out. just ground the test light and touch each side of the fuse on the back there are two little metal tabs touch each side if the light comes on when you touch both sides one at a time then the fuse is good if one side doesn't light it up then the fuse is bad.
hope this is helpfull.

Posted on Jun 02, 2009


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