Circuit design help

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bamx2

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Joined
Oct 24, 2006
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322
Location
Indiana
Ok, this seems simple but it is giving me a headache.

I want to add aux backup lights to my vehicle. I am using a 2 position lighted switch, on off on. I want position one to turn the lights on independent of the stock reverse kights, and position three to turn them on when the reverse lights come on. I know to accomplish that I need to splice a relay into the reverse hot, but I cannot figure out how to get position one to work. Can anyone help me?

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slicerwizard

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Joined
Sep 19, 2002
Messages
5,610
Location
Toronto, Ontario
Code:
  rev ctl ------+-------------------(rev lamps)---gnd
                |
                |
                |
       slave   ---
              |   |             N.O.
              |   |
              |   |-------+   +-----(aux lamps)---gnd
              |   |     c )   |
              |   |     o )     /
        on     ---      i )    /
                |       l +   | COM
                |         |   |
                |         |   |
                |        gnd  |
                |             |
 fused          |             |
  bat+ ---------+-------------+
 

brennank

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Joined
Feb 3, 2013
Messages
74
Location
Minneapolis MN and Rochester NY
This is from over at DieselPlace, but this is what I used for my backup lights on my truck.

I would run TWO ground wires from a single pole double throw switch on the dash as follows in the diagram. With the switch in the off position = no lights. In position 1 lights on all the time, position 2 lights on with backup circuit.

Original post.
Relay for backup light ?? - Diesel Place : Chevrolet and GMC Diesel Truck Forums

Lots of very useful information.
 

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