How far are the Nat's away again?

[20.4_seconds]

Ok I worked out that it is 12v neg earth clock...but this means diddly squat to me  

Does anyone out there know anything about the connecting and testing of this little bugger.....

Anyone???

Cheers
Nick

[RET]

Nick,

I'm no auto-electrician, but it seems to me that there are two wires for the internal light and two for the mechanism.  There's apparently no presumption of an earth from contact with the car body.  This theoretically means that it can be used in either +ve or -ve earthed vehicles, so long as the fitting screw(s) are properly insulated (using a grommet or some-such).

But if you know it's -ve earth, then the green/yellow one would be the positive for the lamp, since the other appears to be earthed to the body of the globe-holder and hence the clock-body as well.

The other two must be for the mechanism itself, and the positive terminal would have to be the one that is insulated from the body of the clock.  It's a bit hard to tell from the photo but surely one of those terminals must be insulated.

It could be that the different posts on those terminals mean something to an auto-electrician, but as I said, I'm not one

Hope that helps.

cheers
RET

[mcl1959]

I agree with RET, the smaller of the terminals on the back of the clock looks to be insulated so would be the +ve, whilst the larger terminal appears to be earthed to the clock body, hence it would earth to the bracket and then to the car body.
Lamp is the same.

Ken

[20.4_seconds]

Ret and Ken
Thanks once again for your infomative replys...I'd just be a lost, jibbering mess without you blokes  

You just don't want to wire something like that incorrectly and get that dreaded smoke smell of internal parts cooking....

Nick

[Shayne]

Be very careful Nick,
Those clocks aren't worth much at all once you've let the smoke out of them