Rearview cameras
Submitted: Thursday, Jun 01, 2006 at 16:33
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boo boo
just bought a camera for the troopy off ebay. SHMBO wanted one on the car as
well the van, anyway it came with a 9v
battery power cable , about 100mm long, but the box said its 12v and the instructions said the power supply must not exceed 12v. Being a nonelectrical person I was not game enough to wire it into the troopy but instead I put a 9v battery into the cable that came with it. and hooked the camer up to video two as per instructions. Can't go wrong as the vidio leads were labeled. Nothing happened. The screen came to life but nothing on it. I checked the battery and it was fully charged. Should I hook the camera up to the car. I have hooked the screen and original camera up to the car(although I can't
check the van screen until sunday as the van is now 80km a way.) Thats another story.
Can anyone help.
Regards in desperation Bob
Reply By: Member - Omaroo (NSW) - Thursday, Jun 01, 2006 at 16:46
Thursday, Jun 01, 2006 at 16:46
Bob - I've been down the whole path twice now without problems.
I can't imaging why they'd give you a 9-volt battery connector, as every camera and screen I've come across run off 12v. Try them on that - not 9v.
Remember that car alternators output 14vs or thereabouts when charging, so your 12volt-dependent devices either like it or they don't. I wouldn't feel too concerned, but if you are you can get a 12volt-limiting unit from Dick Smiths for around the $10 mark that should help out.
Can you post the original eBay auction number so that we can have a look to see what you thought you were buying? It could only help us understand your problem better.
Cheers
Chris
AnswerID:
176151
Reply By: Motherhen - Thursday, Jun 01, 2006 at 18:26
Thursday, Jun 01, 2006 at 18:26
Took us ages to perfect ours (as we tried wireless first which wasn't adequate for caravan but is still fine in car).
We bought 12v kit regulators for each component from Dick Smith shops, as instructions were 12 v no more no less. Very fiddly to make up and easily blown if a drop of solder in the wrong place, but only regulators we could find. The regulator that came with the cameras was faulty (seemed OK in our primitive experience so had it tested by an electronics
shop technician - caused us a lot of wasted time trying to find out why it didn't work), but i got no sense or replacement or restitution from Hong Kong re this.
It didn't come to life if power reading dropped below 12 v eg when car not running - try starting car and running it for a few minutes. Needed regulator as power when engine running goes up too high eg 14 v. Polarity is important - get negative and positive wires wrong way round on a join and it won't work. Multi meter essential for all of the above and to ensure you don't wire something up wrong way round and blow the appliance. Our camera brand now comes in 12 v, used to be in 9 v - yours might be similar. I got email support from vendor in Hong Kong for a number of queries we had.
Search the net for help understanding the electronics.
Good luck - you'll be pleased when it all works.
AnswerID:
176172