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making my clock work, positive earth again!
Posted: Sun Oct 14, 2007 1:33 pm
by callyspoy
hi there, my clock is positive earth, my car is negative(yes i have a knack of doing this, ie-rev counter!) anyone know if its simple to get it working, or should i just get the insides cut out and changed for quartz?
Posted: Sun Oct 14, 2007 1:48 pm
by paulk
Can't you isolate it from the car and just wire it in the right way round.
Posted: Sun Oct 14, 2007 3:05 pm
by callyspoy
is that not mildly dangerous?
Posted: Sun Oct 14, 2007 4:37 pm
by alainmoran
It would only be dangerous if it were badly isolated, so long as there is no possiblity of the +ve clock body coming into contact with the -ve bodyshell you should be reet
Posted: Sun Oct 14, 2007 4:59 pm
by callyspoy
hum, it is a possibility...would make life a little easier/cheaper(same thing in my eyes!!)
Posted: Sun Oct 14, 2007 6:10 pm
by MoggyTech
callyspoy wrote:hum, it is a possibility...would make life a little easier/cheaper(same thing in my eyes!!)
Just fit a low amp in line fuse for extra safety with the reversed polarity. A clock only draw a few milliamps so an inline fuse holder from Maplin or Haldfords fitted with a 100ma fuse will keep you safe.