circuit diagram

DockH

.
May 14, 2011
30
Abbott 22 Lorain, Ohio
Two questions: My Don Casey "Sailboat Maintenance" show a "Sniffer" in circuit diagrams but there is no reference to what it is in the text nor the index. What is a sniffer ?
Second, SeaSense 6 gang switch panel, with single pos and single neg busbars leading to battery. Separate pos from switch to load source. How do I handle multiple black return wire to neg bus without splicing six wires ?
 
Nov 6, 2006
10,212
Hunter 34 Mandeville Louisiana
Probably a propane detector close to the stove.. commonly referred to as a "sniffer".