12v power supply for GPS
Posted June 17, 2008 - 06:16 PM
My GPS has the common problem of cutting out due to vibrations. I tried packing the battery case but no good. So i purchased the aftermarket 12v cigerette lighter power supply.
now the question is how do i wire it?
My bike doesn't have a Battery so 12v will only be supplied when the bike is running and if the GPS batteries have virated off the contacts will the GPS turn off when 12v supply is cut?
Option 1: mount cigerette lighter behind headlight and hardwire to lighting system. Problem is it could get wet or cut out when power is lost.
Option 2: remove the cicruit from the cigerette adapter and enclose it in a small container. This will eliminate water problem.
Option 3: instead of hardwiring to bike, hardwire it to 2 C sized batteries which would give me about 50hours usage provided they didn't vibrate loose.
So many questions!!
Any ideas would be great
Posted June 17, 2008 - 07:16 PM
I took apart the cig assembly and sodered 2-wires to the circuit board black/red. Connected to my battery with a automotive in-line mini-fuse. Also, used liquid electrical tape to somewhat water proof the circuit board. I fit under my seat just barely.
Than because of the circuit baord and led light, I had to install an external switch to turn off power to my GPS as it will drain the battery even w/out the unit pluged in.
IMO..... for you, I would go with the external battery pack, that way you could tape and stuff the crap out of the battery holder and not damage the GPS unit.
If you connect to your head light or any 12v source, you will lose whatever tracking during your ride as soon as the bike stops running.
Posted June 18, 2008 - 05:51 AM
Posted June 18, 2008 - 11:42 AM
Posted June 19, 2008 - 06:23 AM
Just checking if you did everything you could.
Posted June 19, 2008 - 10:47 PM
Posted June 19, 2008 - 10:52 PM
i packed it from behind the batteries and also packed in between the terminals and the batteries with alfoil to make them a tight fit. i will try packing in between the batteries and see how it go's.
Packing just won't work. But if you are going to try... be sure to put dielectric grease on the battery contacts to prevent the arcing.
Posted June 19, 2008 - 11:00 PM