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Installation and Programming Instructions for the Serial Interface Module

Serial Interface Module

Federal Signal www.fedsig.com

Wiring the Serial Interface Module to Power and Ground

AIRBAG DEPLOYMENT: Do not install equipment or route wiring in the deployment path of an

airbag. Failure to observe this warning will reduce the eectiveness of the airbag or potentially

dislodge the equipment, causing serious injury or death.

SEAT REMOVAL PRECAUTION: If a vehicle seat is temporarily removed, verify with the vehicle

manufacturer if the seat needs to be recalibrated for proper airbag deployment. Failure to follow

this warning cause serious injury or death.

To wire the Serial Interface Module to power and ground:

1. Connect the white wire from the supplied J1 cable harness on the Interface Module to a 1 A fuse.

2. Connect the fuse end of the white wire as close as possible to switched ignition power. Power should

also be present in the cranking start position.

3. Connect the black and black/white wire from the supplied J1 cable harness to battery ground. Use

16AWG wire to extend cable length.

4. Insulate spliced leads with twist-on wire connectors. Fold and seal unused leads. Use wire ties and hold-

downs for strain relief.

Wiring the SignalMaster

LIGHT HAZARD: To be an eective warning device, this product produces bright light that can be

hazardous to your eyesight when viewed at a close range. Do not stare directly into this lighting

product at a close range, or permanent damage to your eyesight may occur.

Depending on length, light bars have a four-, six-, or eight-head SignalMaster. Be sure to use the proper

controller to match the number of SignalMaster heads in the light bar.

If SignalMaster

operation is not initiated by a control head or external controller, the SignalMaster LED

heads ﬂash according to the selected mode (1, 2, or 3) of operation.

External SignalMaster

The Interface Module can be conﬁgured from the factory default of Internal operation (see the next

section) to External operation. The Interface Module drives each SignalMaster head independently via an

external Federal Signal SignalMaster controller or an SS2000SM series siren. Either device will provide an

independent ground signal to illuminate each head.

For SignalMaster control functions wired to 12 Vdc for External Control, see Figure 5 on page 11.

Internal SignalMaster (Factory Default)

The Interface Module SignalMaster control leads are deﬁned in Table 3. The SignalMaster can be conﬁgured

from External to Internal operation. +BAT applied to the speciﬁed control lead activates the internal

SignalMaster controller in the light bar. See Figure 4.

Federal Signal Corporation Serial Interface Module User Manual

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