Boston Acoustics RX57DIN - Manual (Page 6)

4
Speaker Wiring
For your convenience, two sets of two-conductor wire are provided to
use between the speakers and the amplifier or head-unit. Other wire
may be substituted if desired as long as it is at least 18 gauge.
Two-conductor speaker wire connects the positive and negative ter-
minals of each speaker to the corresponding positive and negative ter-
minals on the amp or head-unit. One side of the wire will be marked in
some way. Use the marked conductor to connect the positive terminals
and the plain conductor to connect the negative terminals.
Routing the Wires
Include a large safety margin when estimating the length of each wire.
For Doors: Run the wires through factory harnesses or existing
holes, if possible. If drilling new holes, file the edges and install rubber
grommets and PVC tubing to protect the wires against abrasion.
For Rear Deck: Run wires along the door sills just inside the car, lift-
ing and replacing carpet as required. You may have to remove the rear
seat to pass wires back to the rear.
stripe on one side ridge on one side different color wires thread on one side