ORIGINAL: RCKen
All that is going to do add dead weight to the plane because you are putting a second battery in the plane. You could consider a setup such as this. [link]http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXD693&P=7[/link]
This simply remotes the glow plug outside of cowl. You can still use your normal glow driver to start the plane.
Ken
hmm, might consider that. Perhaps run that lead wire through the firewall and install on the side of the plane somewhere?