M_Boats: Traveler

I'm a new owner of a M-15 #640. I'm setting it up for the first time and have figured most of it out But I need help with rigging the traveler. Would some one on the list give me some guidance on the line to use, its length and where it attaches. The boat has cleats on each stern corner are they for the traveler? Thank you, Willy Gorrissen