Car Fuses and Wiring
Ford Contour
Ford Ranger
Late Model 1979-New Ford Mustangs

Where can you get a free wiring and circuit diagram for the brake and backup lights on a 1998 Ford Contour?


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Wiki User
2004-11-21 10:42:17
2004-11-21 10:42:17

Public Library. Take a pad and pencil, you will be doing a lot of writing.


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On the transmission lever there is a backup light switch which makes contact with the backup light circuit when you place the lever in R. The circuit then sends current to the backup lights and they come on. When you move the shift lever out of Reverse, the circuit is broken and the lights go out. The problem you probably have is a dirty swicth where the contacts meet from the lever to the switch. If the contacts are dirty, you will get intermittent current to the lights. So find the switch on the lever, use some rubbing alcohol to clean the contacts and it may fix it. If not, then your backup light switch may be going bad, but try cleaning the one you have before investing in a new one.

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Check the circuitry to the backup lights. The same fused circuit is probably used for both brake lights and backup lights. As you go past Reverse, the backup light probably is turned on briefly, causing the fuse to blow. It's just a thought, but I'd think it worth checking.

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It is not really a circuit, traffic lights in todays world are controlled by programable logic controllers or a plc. There are rungs of logic to control the changing of the lights which are known as the inputs and outputs where the voltage is controlled to change the lights from red to yellow and green.

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If the lights are the load of the circuit, then the lights will be off if the circuit is open.

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how do you replace backup lights on 99 grand am?

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