Well guess what! I contacted Yamaha and received a pdf file on installation of the passing lights on The 2005 Silverado Model. It seems that the two pin White connector IS for the Passing Lamps so I spliced into the connector with the red and white wire from the passing lamps red to blue and black to black. the passing lamps did not work with ignition switch on as you said ie no 12v. BUT NOTE
This passing light system is equipped with a relay that allows passing light operation only when the engine is RUNNING! Started up the bike and on came the Passing Lamps. Since I have the handle bar rocker switch I just flick the lamps on and off whether on low or high beam ie I can go cross country... from state to state ALso u do not need the fuse assembly which is not used on 2005 R* Silverados

Thanks for the clues to the mystery solved.

PopRivet, do you know if this two pin white connector with relay is on the 04 Road Star as well as the 05 ? I spliced mine into a wire that the instructions say will have it on all the time that the ignition switch is on. Sure would be easier on the battery if fewer lights were on when cranking the beast over.

PR,

Personally, I'd use the inline fuse. Just a backup. If the main headlight fuse blows, then all your headlights are gone. 'If' they're is just a simple short in the passing lights, then the passing light fuse would blow and you'd still have headlights.

Your call,

Odo

this connector is very obvious inside the Headlamp and i believe it only is on the
XV17Att,ATMt silverado 2005 R* everthing else is wired the old way The passing lamp accessory package comes with the connector on the wiring and you just remove the dust plug and plug the two together I can forward you the addendem if you like. the passing lamp connector is put through the large hole in the back of the headlight

It is not on the same circuit as the headlamps Like isaid it is connected to the igniton module throuh its own relay and comes on only when the engine is Running not like the headlights which come on with the key as well as the other lights.
if you just turn on the ignition key the headlights come on and the inst lights and the running and tail lights however at this point ther is no power to the two pin passing lamp connector once the engine is started and running the passing lights come on!!!

also
There is an issue with the 2005 model Roadstars equipped with the auxiliary driving lights/ passing lamps (eg; Silverado). When the Dyna 3000 is installed this lighting circuit is disabled. Apparently there is a relay that is controlled by the ignition control module that operates these lights. This is not supported in the current Dyna 3000 and there are no plans to re-design the Dyna 3000 ignition at this time. If you wish to use the Dyna 3000 on a 2005 model Roadstar with this lighting setup you will need to install a switch on one of the wires from the ignition module

Pop,
Sounds like you have a good setup as long as you aren't running the Dyna 3000.
My 04 doesn't have any extra plugs that I can remember seeing in the headlight housing. I like what Odo said about an independent circuit for the passing lights. Not likely to loose both the head light and passing lights together that way. If you do, your probably dead on the side of the road anyhow. Eventualy I will probably run a seperate fused circuit all the way back to an accessory point under the seat with a switch on the left side cover close to the seat. Thank you both for your input.

That is why the plug is there to put the passing lamps on a independent circuit apart from the headlight etc

Ya, I've got it now. Don't mind me. It's that not being able to ride because of the weather thing. Kinda like going without sex. Gets difficult to concentrate.