Just click on the red Honda Direct Line link above, then click on the VTX sign in the lower left, then click on the 1800C picture then go to 'Lightbars' in the right hand column. You'll find lightbars for your bike by Rivco, National Cycle, Jardine, Kuryakin, Cobra and Big Bike Parts there. Make sure you call and find out which ones are compatible with your windshield before you order one.
Big Bike Parts Contour lightbar is very adjustable for use with windshields,
and is not welded, so will not vibrate apart at welds as some owners
of other lightbars have reported.
It comes with a wiring harness and relay.
Looks and works great.