Taillight Wire - Spot Lights

I have looked at the threads about wiring in spot lights / running lights. I will be using a relay, mounting it under the seat, fused, etc. I am thinking that the blue wire for the taillight should be in a harnass running under the seat. Would it be sufficient to power my relay from wire running to the taillight so the spot lights are only on when the key is turned on? I am also going to wire in a manual switch up front. Will this wire / circuit handle the load of the relay? Thanks. R.

Basically what you are hooking up is identical to the passing light install. There is a tech article you should read. http://www.venturerider.org/forum/showthread.php?t=43898

Best to use a relay (like you mentioned). http://www.venturerider.org/forum/showthread.php?t=58432&highlight=passing+light+relay

Also... do a search for "passing lights" and read some of the threads.

For the relay you have a fused power connection from the battery directly to the relay. The connection to the running lights just signals the relay to close and pass the power to your lights.

Hope this helps and welcome to the site !