DPST relay question - Williams Pharaoh and backbox GI

Hi:

The only thing I know about relays is what I just read on the web over the
last 20 minutes... :-( )

I have a Williams Pharaoh machine where the back box GI lighting is off all
the time unless the backbox GI relay is fired and then the backbox GI lights
flash on for a moment and then go back off (relay is engerized then
denergized).

It seems like I have a Double Pole Single Throw relay from what I read - the
circuit is open until the relay is energized then the circuit closes. This
would explain the GI backbox lights being most of the time.

I see www.marvin3m.com states that I need a 12v 10 amp DPST for backbox GI
lighting. Now I'm confused - I want the GI lights on most of the time, and
turn turn off (flash) periodically. I would think that this indicates that
I do not want a DPST relay, but something that is usually closed circuit and
opens the circuit when the relay's coil is energized.

The relay I currently have in there is (it seems like an aftermarket
automotive relay):

BOSCH
12V 30A
0332014125

I cannot tell if its DPST or not, I just know how the lights work. The
picture on the side of the relay itself frightens and confuses me, but I
think it states that the relay is normally open then closes when energized
(this would support my theory).

If you go to the very top of the page with the following link, then page
down 4 times:

http://www.airheads.org/content/view/159/49/

You should see a picture of 3 relay enclosures. Relay [c] (to the immediate
right of the blue relay enclosure) is what's engraved onto my Bosch relay.

Would someone please set me straight about my relay situation (especially
since what I think I need contradicts what is states at www.marvin3m.com,
which usually means its time to post to RPG and ask for help) and about what
part I really need. If you could point me where to buy one that would be
great too with a specific part number that would be even better.

Thanks,
Bill


.

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