making my clock work, positive earth again!

Post by **callyspoy** » Sun Oct 14, 2007 1:33 pm

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?

Post by **paulk** » Sun Oct 14, 2007 1:48 pm

Can't you isolate it from the car and just wire it in the right way round.

Post by **callyspoy** » Sun Oct 14, 2007 3:05 pm

is that not mildly dangerous?

Post by **alainmoran** » Sun Oct 14, 2007 4:37 pm

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

Post by **callyspoy** » Sun Oct 14, 2007 4:59 pm

hum, it is a possibility...would make life a little easier/cheaper(same thing in my eyes!!)

Post by **MoggyTech** » Sun Oct 14, 2007 6:10 pm

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.