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Old 01-10-2018, 12:56 PM   #11
Sergio
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Default Re: Back-up Light

They are the same, the important part is the "T9AP1D52-48".
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Old 01-10-2018, 02:16 PM   #12
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Default Re: Back-up Light

Thank You, Sergio
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Old 01-10-2018, 02:38 PM   #13
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Default Re: Back-up Light

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Originally Posted by wizcart View Post
crash, I already have a voltage reducer on the cart. I was wanting to figure out how I could run a wire from the F/R switch or the reverse buzzer just to turn a 12 volt light on in reverse.
There are two options.
Use the reverse buzzer as a “trigger” to turn on the lights via use of a relay. You would run an additional 48 volt wire from the buzzer to the relay, then an additional wire from the 48v reducer powering 12v to the relay. Then the light power from the relay to the lights which would be on the 12v circuit of the relay. Thus when turning on the cart reverse buzzer it sends 12v to the rear lights.

Or you can run an additional positive from the relay to a reducer input, then wire the negative or ground input, then the output to the lights. Thus the reducer is only powered and sending 12v to rear lights when buzzer is on.
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Old 01-11-2018, 10:45 AM   #14
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Originally Posted by Sergio View Post
My only concern of not using a relay is the micro-switch burning out, some bright lights like the ones posted will draw more than 2 amps.

This is a picture I had posted helping someone else with a relay, it may help you visualize it better.
http://www.buggiesgonewild.com/attac...connection.jpg
Sergio, Is that a resistor between the +positive and the - negative wires ?
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Old 01-11-2018, 11:10 AM   #15
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Default Re: Back-up Light

That is the diode drawn in the diagram: 1N4007 or 1N4004.

I like putting the diode that way as it removes any stress from the connection and you can just shrink wrapped it.
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Old 01-11-2018, 11:43 AM   #16
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Default Re: Back-up Light

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Originally Posted by Sergio View Post
That is the diode drawn in the diagram: 1N4007 or 1N4004.

I like putting the diode that way as it removes any stress from the connection and you can just shrink wrapped it.
Thanks again, Sergio
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Old 01-11-2018, 01:28 PM   #17
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Default Re: Back-up Light

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Originally Posted by Sergio View Post
That is the diode drawn in the diagram: 1N4007 or 1N4004.

I like putting the diode that way as it removes any stress from the connection and you can just shrink wrapped it.
Hate to beat a dead horse..but inquiring minds want to know. You told us the what and how... Now for the why... Why is the diode needed? Would that be a general rule of thumb whenever one installs a relay?

Depending on your answer, I may have more questions.

This made my head spin, but I think I figured it out.... https://en.wikipedia.org/wiki/Flyback_diode

Thanks for the help Sergio!
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Old 01-11-2018, 07:38 PM   #18
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Default Re: Back-up Light

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Originally Posted by Spartan Mark View Post
Hate to beat a dead horse..but inquiring minds want to know. You told us the what and how... Now for the why... Why is the diode needed? Would that be a general rule of thumb whenever one installs a relay?

Depending on your answer, I may have more questions.

This made my head spin, but I think I figured it out.... https://en.wikipedia.org/wiki/Flyback_diode

Thanks for the help Sergio!
Diodes are useful in "steering" current flow and preventing damage to a DC operated device if it is accidently connected "backwards". Its main function is to allow an electric current to pass in one direction (called the diode's forward direction), while blocking current in the opposite direction. It is not a perfect check valve or ideal one-way device. It has leakage currents, it has a forward drop (dynamic resistance) and it has breakdown voltages and current limits.Diodes are primarily used for rectification ie converting AC to DC.
Hope this helps.
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Old 01-12-2018, 01:26 AM   #19
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Default Re: Back-up Light

As the relay contacts close on the high voltage side it can cause a spike in the line and the diode stops the current from flowing back up the line in the wrong direction and causing any damage (especially in the long term if it does that every time it turns on).
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Old 01-12-2018, 02:32 AM   #20
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Default Re: Back-up Light

Quote:
Originally Posted by Sergio View Post
That is the diode drawn in the diagram: 1N4007 or 1N4004.
I like putting the diode that way as it removes any stress from the connection and you can just shrink wrapped it.
Are there any concerns on soldering a diode onto those two wires (possible heat damage to the diode)?
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