Garmin Streetpilot Colormap
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 USB PC Data Cable F Garmin GPS 176C196295 NEW  US $17.98
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 Original Genuine Garmin Vehicle Lighter Power Cable 76 72 60 CX CSX Others US $12.99
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 Street Pilot 3 III Portable GPS System StreetPilot ColorMap Garmin System Auto US $40.00
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 USB Interface data Cable for Garmin GPS III 72 76 PC US $14.98
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 1X GPS Antenna FOR Garmin GA 29 GA 26 25BNC 010 00174 03 MAGNETIC ROOF MOUNT US $9.88
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 GARMIN GPS MapSource 64 MB Blank Data Memory Card US $54.99
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 GPS REMOTE ANTENNA FOR GARMIN GLASS MOUNT BNC US $.99
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 Car Power Charger Adapter Cord Garmin GPS 12CX 12MAP 12XL 45 45XL 48 II II III US $10.89
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 Car Power Charger Cable Cord Garmin GPS III III 3 pilot V StreetPilot ColorMap US $10.88
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 Car Power Charger Adapter Cord Garmin GPSMAP 60 60c 60cx 60cs 76 96C GPS 72 72H US $12.89
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 GARMIN STREETPILOT 2610 2620 2720 2730 2820 ColorMap III DASHBOARD DASH MOUNT US $12.50
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 Car Power Charger Cord Garmin GPSMAP 96 176 176C 196 295 76csx 76c 76s 76cs 76cx US $10.89
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 GPS antenna for Garmin 235StreetPilot176V182276C US $12.99
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 GARMIN GPS 64 MB Blank Data Memory Card 010 10226 12 US $56.99
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 Power Cable 12V for Garmin GPS 60 60C 60CS 76C 76CS 76S US $10.88
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 GPS ANTENNA FOR GARMIN GPSMAP 215 225 276C 292 295 NEW US $18.73
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 Garmin 60 CS 76 Cx CSx GPS power cable 010 10085 00 NEW US $10.88
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 Power charger Cable Garmin 60C 60Csx 76C 76CS 60Cx 60CS US $10.88
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 GPS GARMIN MAPSOURCE 128MB 128 MB DATA CARD 010 10226 13 176 176C 276C 196 296 US $49.95
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 GPS Antenna for Garmin GPSMAP 130 135 152 162 168 172 US $9.99
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 Garmin GPS III V60C 72 76 pc interface cable cord US $10.98
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 Power Data PC Cable Garmin GPSMAP 176 176C 196 295 96 96C 12XL 78 72 72H 60CSX US $14.89
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 New Auto 12V Bare Wire Cable for Garmin 010 10082 00 GPS 12 38 40 176 176c 196 US $17.99
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 New Garmin 010 10231 01 GPS Deluxe Carrying Case US $29.99
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 Low Profile Marine GPS Antenna for Garmin GPSMAP 420 421 430 431 440 441 520 521 US $23.99
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 Low Profile High Gain Active GPS Antenna for Garmin Marine GPSMAP Sounders BNC US $23.99
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 Low Profile High Gain Marine GPS Antenna for Northstar Chartplotter 952 961 962 US $23.99
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 Low Profile Marine GPS Antenna for Garmin GPSMAP 525 526 530 531 535 536 540 541 US $23.99
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 REMOTE MARINE ANTENNA GARMIN GPS MAP 120 120XL 128 135 US $36.99
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 MARINE ANTENNA FOR GARMIN GPS MAP 178 180 182 182C 188C US $36.99
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 USB PC Data Cable F Garmin GPS IIIIIIIV12XL NEW US $17.98
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 REMOTE ANTENA GARMIN GPS MAP 478 492 492C 496 498 545 S US $19.99
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 Single Cable USB to Serial Converter Garmin 4 pin Round US $17.98
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 REMOTE ANTENNA FOR GARMIN GPS MAP 376 C 378 396 398 C 478 492 C 496 498 C 545 S US $19.99
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 Garmin 128mb mapsource memory card 128 mb data card megabyte map source gpsmap US $49.95
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 GPS Antenna for Garmin GPSMAP Sounder 198c 188 188c 185 US $9.99
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 Garmin Large GPS SATNAV Deluxe Black Carrying Case US $39.27
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 Garmin 010 10701 00 GA 25BNC Low Profile Remote GPS Antenna US $28.95
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 1X GPS Antenna for Garmin GA 29 GPSMAP 545s 550s 555s US $18.58
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 1X GPS Antenna Garmin GA 29 GA 26 25BNC 010 00174 03 US $18.92
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 POWERFUL Antenna for GARMIN GPSMAP 176C 178C 180 182C US $22.96
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 PowerPC Cable Garmin GPS III 12XL 176C 96 StreetPilot US $14.88
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 Garmin StreetPilot 3 III GPS 295 Power Speaker Cable US $20.85
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 USB PC Data Cable F Garmin GPS StreetPilot III NEW US $17.98
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 GARMIN OEM POWER DATA CABLE for GPSMAP 60 60C 60Cx 60CS 60CSx 76C 76Cx 76CSx 76S US $23.85
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 POWERFUL Antenna for GARMIN GPSMAP 215 220 225 230 232 US $22.96
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 GPS Antenna for GARMIN V GPSMAP 298c 396 396c 398c 496 US $22.96
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 Garmin 12v Vehicle Power Cable for most GPSMap and StreetPilots 010 10085 00 US $16.00
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 GPS Antenna for Garmin GPSMAP 196 392 492 376C 378 478 US $22.96
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 Marine GPS Antenna for Garmin GPSMAP 530 530s 535 535s US $22.96
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 1X 3ft GPS Antenna for NorthStar 951X 951X XD 952X XD US $19.33
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 Bare Wire 12V Cable for Garmin StreetPilot III ColorMap US $17.99
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 12V Bare Wire Cable for Garmin GPSMAP 60 60c 60cx 60cs 60csx 78 78s 78sc US $17.99
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 12V Bare Wire Cable for Garmin GPSMAP 76 76c76s 76csx 76cs 76cx 96 96c US $17.99
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 BNC Antenna Garmin GPS II III V 15 45 48 50 65 75 89 US $16.99
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 GPS Antenna for Garmin GPSMAP 396 398 398C 478 492 492C US $9.99
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 POWERPC DATA CABLE FOR GARMIN GPS W ROUND 4 PIN PLUG US $12.99
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 GPS Antenna for Garmin GPSMAP Sounder 182 182c 178c 178 US $9.99
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 GPS Antenna for Garmin GPSMAP 495 496 GDU 375 370 US $9.99
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 GPS Antenna for Garmin GPS II Plus II III Pilot US $9.99
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 GPS Antenna for Garmin GPSMAP 172C 176 176C 178 188C US $9.99
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 USB 2 in 1 PC Data Power Cable for Garmin 76 76C GPS US $28.98
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 GARMIN GPS 76 60 78 96 232 DATA AC power adapter US $9.99
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 REMOTE ANTENNA FOR GARMIN GPS MAP 178 178C 180 182 555 US $19.99
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 EXTERNAL ANTENNA FOR GARMIN GPS MAP 296 376c 396 498C US $19.99
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 GARMIN OEM CARRYING CASE for STREETPILOT 2610 2620 2650 2720 2730 2820 ColorMap US $26.50
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 Garmin Dash Mount for GPSMAP 196 295 296 396 495 GPS US $11.00
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 REMOTE ANTENNA FOR GARMIN GPSMAP 188C 235 SOUNDER GPS US $19.99
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 Garmin 60 72 76 76S CS C 3 V 92 96 45 GPS PC Data Cable US $10.98
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 GPS Antenna for Garmin GPSMAP 225 230 232 235 238 276C US $9.99
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 Mini GPS Active Antenna BNC series connector 2M 3M 5M US $7.21
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 Garmin GPSMAP Series Deluxe Carrying Carry Case Bag US $24.95
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 Low Profile Marine GPS Antenna for Garmin GPSMAP 545 546 550 555 720 740 GA 30 US $23.99
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 New Design Low Profile High Gain Marine GPS Antenna for Northstar AN145 AN150 US $23.99
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 EXTERNAL ANTENNA FOR GARMIN GPS MAP 178 178C 180 182 US $19.99
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 Garmin PN 010 10231 01 GPS Carrying Case Deluxe Bag US $24.95
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 Garmin PN 0101023101 GPS Carrying Case Deluxe Bag US $24.95
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 REMOTE ANTENNA FOR GARMIN GPS MAP 185 188 188C 192C 196 US $19.99
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 GPS active Antenna angle 90° bnc for Garmin gpsmap US $13.00
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 Low Profile High Gain Active GPS Antenna for Garmin V II III Pilot III Plus US $23.99
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Garmin StreetPilot Colormap?
I recently purchased a used Garmin StreetPilot Colormap GPS. When I looked up reviews, it scored very high. But it seems to be outdated. 
Is there an upgrade that will let the Colormap route trip internally, instead of doing it on the computer?
What is the best and newest Maps to install for this unit? Garmin.com only lists MapSources: WorldMap, Trip & Waypoint Manager, and MetroGuide North America for this unit. What about City Naviator or City Select?
Sorry about the length of this question and Thank You for any help you can give.
This is Just a Garmin StreetPilot Colormap. No Model Number.
I have a Garmin and they have an excellent website and they do allow on-line upgrades to their software. You didn't give a model number so here is a link to their products page. Click on your product and then on that page you will see a link for updates and downloads.
https://buy.garmin.com/shop/shop.do?cID=134
Good luck