Connecting Satnav To Switched Circuit

Discussion in 'Technical Help' started by crispey, Jun 2, 2017.

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  1. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
    7,194
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    Uk
    Ok ladies and laddies,
    I am a total lectricnumpty! I want to connect my satnav through a switched circuit on my tiger, can I just connect the live wire to a fuse in the fuse box or is that a bit Heath Robinson? IMG_2779.GIF
    Ta
     
  2. Graham.db

    Graham.db Member

    Sep 26, 2016
    22
    18
    Wiltshire
    You can take a wire from your battery and put a fuse in the red line and that would do, but the connection to the sat would all ways be live
     
  3. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    Yeah thanks, I have it connected to the battery at the moment. I want it to only get power when ignition is on. Would this happen if I connected it to a fuse? Is that possible?
     
  4. Graham.db

    Graham.db Member

    Sep 26, 2016
    22
    18
    Wiltshire


    This what i was going to try and explain but remembered a ytube some where
     
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  5. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    Thanks for that! I should have known he'd have done something!'
     
  6. Tiglet

    Tiglet Vintage Member

    Mar 28, 2016
    4,433
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    Steve, you could always piggy back the live spade connector at the horn. On my XC the horns under the beak.
    That'll give you a switched live connection.
    Looks like quite a few Tiger forum members have successfully powered their sat navs this way.

    https://www.tiger800.co.uk/index.php/topic,18399.0.html

    Haven't tried this myself as I don't own a sat nav for any of my bikes.
     
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  7. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    Thanks. I think this is the way I will go
     
  8. Mr Toad

    Mr Toad Senior Member

    Oct 14, 2016
    262
    113
    Nottinghamshire
    I took my power from the sidelight. Easy to get the wire from the sat nav into the headlight and easy access to power once in there.

    Don't use the headlight feed, if you do that you have to be aware that your sat nav will work fine during the day and at night when on dip beam but will switch off when you select main beam. : unamused:
     
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  9. Sprinter

    Sprinter Kinigit

    Aug 17, 2014
    6,026
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    If you use his imfo u gota buy a t please bob

    Did you know;- It was delboy who played the Saxaphone on Baker Street?
     
  10. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    Resolved using @Tiglet s link! Bloody simple even for me. On my horn it's the blue and black wire you want to piggyback to.
    Look here for the info.
    Cheers for the help
     
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  11. Tiglet

    Tiglet Vintage Member

    Mar 28, 2016
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    Glad to be of assistance Uncle Crispey :)
     
  12. scotdoc

    scotdoc New Member

    Jan 15, 2017
    5
    3
    Crewe
    Followed the tips to identify power from horn - I get 12v at the horn end and also at the connector for the satnav (tomtom rider) but when I connect the cable the screen continues to show battery power ie; not the lightning charging sign. Doesn't matter if ignition on or off. Horn works fine

    Am I missing something?
     
  13. scotdoc

    scotdoc New Member

    Jan 15, 2017
    5
    3
    Crewe
    sorry forgot to add;
    2005 955i Daytona
    Live wire is orange, earth is purple colour (can't locate a wiring diagram to check lead colours)
    Although just noticed that when it is fully charged on the mains it also goes to battery sign - does that mean it only shows lightning when it needs a charge?
     
  14. dilligaf

    dilligaf Guest

    Think you might of answered your own question mate :p
    Try running the sat nav down a bit and then try it again and see if the lightning/charging sign comes on :p
     
  15. scotdoc

    scotdoc New Member

    Jan 15, 2017
    5
    3
    Crewe
    It didn't work - attached with 50% battery usage and no lightning bolt.

    Checked voltage between 2 power contacts on mounting pad 4.5-5V only; I presume it should be higher? No increase when engine revved.

    Next steps before I hand over to a workshop?
     
  16. dilligaf

    dilligaf Guest

    Bugger:( that’s me out of ideas mate :confused:
    Hopefully someone will be along soon who has a better understanding of wiggly amps :).....it’s the work of the devil :imp:
     
  17. Yorkshireman

    Yorkshireman Crème de la Crème

    Dec 12, 2015
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    Sounds like you’ve got power to the mounting pad if you are getting 4.5 to 5 volts on the contacts, don’t sat navs run on 5 volts? My car one does. Can’t explain why yours doesn’t appear to be charging unless it’s faulty.
     
  18. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
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    I’m as confused as you are. If your horn only works when the power is on and you are taking a feed from that to your sat nav with the pos cable and you’ve earthed the sat nav to the frame or similar, not the horn earth, then it can only be switched power. Because if the horn hasn’t got power nothing else attached to it should
     
  19. scotdoc

    scotdoc New Member

    Jan 15, 2017
    5
    3
    Crewe
    Looked on tomtom website - charger should provide 5v so it appears the feed is ok all the way to the unit itself.

    Hope its not the unit - but if it was would it not charge on the mains either?
     
  20. Dougie D

    Dougie D Crème de la Crème

    Jan 30, 2016
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    I had to google that @Sprinter :p
    todays useless piece of info;)
    gre.JPG
     
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