So as a follow up to this, I got a chance to check the wiring harness on my 2011 SL242. Both female plugs for under water lighting are sitting on the harness. The colours for both port and starboard plugs are Yellow/Gray + light green. I also checked the colours on the accessory switches at the helm. These correspond to Accessory switch 2

. I have my Standard Horizon currently connected to accessory switch one, so it works well for me.
I was able to buy the male side of the connector here
http://ca.mouser.com/Search/Refine.aspx ... d=54200210 . I think these pins would work,
http://www.digikey.com/product-detail/e ... -ND/299431The breaker under the helm is 10A, so it will support two Seablaze X underwater lights, each rated at 3.6A@ 12V.
So now I just have to purchase a drill bit for gelcoat/fiberglass and grow a pair big enough to drill into the transom below the waterline

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2011 SL242 5.7 VP GXi - 320 HP Dual Prop
