M/A-Com M7100IP Series Installation Manual page 43

3. After installing the Auxiliary Control Unit in the normal fashion, connect
the Dual Control Cable (P1) to Auxiliary Control Unit, and tighten
jackscrews.
4. Connect the Remote Mount Accessory Cable (19B802554P7) to the
Auxiliary Control Unit.
5. A yellow Ignition Sense lead is provided on the Dual Control Cable and
the Front Mount Accessory Cable. If the "Ignition Sense" feature is
enabled on the Radio Unit, it is necessary to connect only one of the
yellow leads provided, whichever is convenient. Tape back the unused
yellow lead (see Page 25 for details).
6. Install the Speakers in convenient locations near the Radio Unit and
Auxiliary Control Unit.
Parallel Audio Installation Requirements
In special configurations that require both speakers to operate at the same
time (simultaneous audio), install the speakers for parallel audio operation.
Refer to Figure 25 for the Parallel Audio Setup Installation. Perform the
following steps to install parallel audio speakers:
A. Use the two 8Ω speakers, part number 19A149590P12, in place of
the two 4Ω speakers, part number 19A149590P11.
B. Hardwire each speaker directly (without relays) as shown in
Figure 24.
It is very important to use the correct speakers for this application.
Wiring 4Ω speakers in this configuration can cause damage to the
radio.
7. Install a relay (19A149299P1) from the kits supplied at a location near
the leads from each speaker. For mounting, use the #8x3/4" sheet metal
screw and nut plate supplied with each kit.
8. At a convenient point cut one of the wires in each of the 2-wire speaker
cables, spread the leads, and strip the ends. Crimp a 1/4" tab receptacle to
each end.
9. Radio Unit Speaker: Connect the lead nearest the speaker to Pin 87A of
the relay. Connect the lead nearest the connector to Pin 30 of the relay.
Connect the connector to the Accessory Cable P2 (Refer to Figure 24).
10. Auxiliary Control Unit Speaker: Connect the lead nearest the speaker to
Pin 87 of the relay. Connect the lead nearest the connector to Pin 30 of
the relay. Connect the connector to the Accessory Cable P2 (Refer to
Figure 24).
NOTE
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