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MP875 Modem User Guide
28 2130808
Usethesuppliedmountingscrewsandwasherstosecurethe
MPmodemthroughtheholesalongthe edgeofthecase
bottom.
Figure 3-3: Mounting the MP modem. Arrows indicate the mounting holes. The
front cover is open for illustration purposes only. Close it before mounting.
Ground the MP modem
Note: Electrical installations are potentially dangerous and should be
performed by personnel thoroughly trained in safe electrical wiring
procedures for vehicles.
Automotiveinstallationsusuallyprovideagoodquality
groundforeachpieceofelectricalequipment.Inmostcases,
groundtheMPmodembyconnectingtheblackgroundwire
ofthepowerharnesstoeitherthevehiclechassisortothe
negativeterminalofthebattery.
IfadeviceconnectedtotheMPmodem,suchasanotebook
computer,isnotproperlygrounded,itmaygrounditself
throughthecableconnectingittotheMPmodem.Thiscreates
ahazardandcouldcauseequipmentdamage.Ifyoucannot
properlygroundadevice,apotentialsolutionisto
installa
fuseinthegroundreturnwire.
Thepowerharnesshas5Afusesontheredpowerwireand
thewhiteignitionsensewire,butnotontheblackground
returnwire.(
See“Step3—Installthepowerharness”on
page31.)