Installation and Programming Instructions
5
Model 330104 SMC1 SignalMaster Controller
Tomakethepowerconnectionstothecontroller:
1. Strip1/4"ofinsulationfromthemaingroundwireandcrimptheproperspadeconnectorontoit.
BATTERY EXPLOSION—To avoid a battery explosion, always disconnect the
negative battery cable first and reconnect it last. Avoid causing a spark when
connecting near or to the battery. The gases produced by a battery can cause a
battery explosion that could result in vehicle damage and serious injury.
CONNECTING THE RED AND BLACK WIRES—To avoid damage and ensure
proper operation, the red and black wires MUST be installed as shown in
Figure 2 on page 6.
2. ConnecttheblackgroundwiretothelugasshowninFigure2onpage6.Securelytightenthebinding
screwusinga1/4"at-tipscrewdriverpassingthroughtheopeninginthecover.
3. Routethegroundwirethroughtherewallandtowardthebattery.Connectittoagoodframeground
nearthebattery.Forgaugerecommendations,seeTable4.Inmostvehiclesawirefromthenegative
terminalofthebatteryisroutedandattachedtothescrewatthebody/frameatthefender.
Table 4 Minimum wire gauge
Distance to
Battery 20 A Peak
5 ft 18 AWG
10 ft 16 AWG
20 ft 12 AWG
30 ft 12 AWG
40 ft 10 AWG
4. Connecttheredwirefromthenine-conductorcableoftheSignalMastertothevehiclebatterythrougha
20Afuseholderthatislocatedasclosetothebatteryaspossible.Do not install the fuse until all other
electrical connections have been made.TorunbetweenthefuseandtheSignalMaster,useaproperly-
sizedredwire.Forwiregaugerecommendations,seeTable4.
5. Selectaterminationpointforthe18AWGredpowerwirefromthecontroller.Asapplicable,route
the18AWGredwiretowardthevehiclefuseblockorthroughtherewalltowardthebattery.Ifthe
controllerpoweristobeconnectedtothebattery,installainstaller-supplied,in-linefuseinthe18AWG
redwireasclosetothebatteryaspossibleandterminateitasrequired.Iftheredwireistobeterminated
tothefuseblock,selectanappropriatefusedcircuit.
IMPORTANT:Theterminationpointofthe18AWGredwirefromthecontrollerdetermineswhenthe
directionalsignalcanbeactivated.Whenthewireisattachedtoavehiclefusethatispoweredwhenthe
ignition switch is in the run or start position, the ignition switch must be in the run position to operate the
directionalsignal.Whenthewireisattachedtothevehiclebattery,thedirectionalsignalcanbeoperated
atanytime.Toavoiddrainingthebattery,FederalSignalrecommendsthatthepowerwirefromthe
controller be terminated to a switched source. NOTE:Thecontrollerdraws7mA(0.007A)intheoff
position when connected directly to the vehicle battery.