PolyPlanar MRD85i - Manual (Page 7)

7
B U T T O N D E S C R I P T I O N
The Yellow, Red and Black power wires should be 14AWG or larger
depending on the length to the battery. NEVER operate the unit
without the proper power and ground wire.
NEVER ground the speaker leads and NEVER allow the speaker
leads to come in contact with each other. The speaker wire should
be at least 16 gauge or larger. Be sure to observe the correct
polarity on the speaker connections
Use quality crimp connectors to connect wires together. Seal the
connection well with electrical tape.
NEVER operate the unit without proper fusing. Fuse holder must be
located within 2 feet from the battery. This fuse is to protect the
vessel, not the electronics. In case of a short, the fuse will blow
instead of the wire burning up. Using other than the recommended
fuse ratings at the battery and at the unit may cause damage to the
unit and will void your warranty.
Whenever possible, use cable ties, mounting clamps and similar
wiring aids. Adding stress relief loop to wiring is also advisable to
prevent straining or breakage.
If after reading the directions you feel uncomfortable about installing
the unit, or not equipped or competent to do so, you should have
this installed by a professional installer