What's the best way to check if i've broken it? I used a multimeter across the terminals and when I passed a magnet past the sensor the multimeter didn't budge, does this mean i've broken it?
Cheers
Pete
I've got the speedo sender below, it takes a signal from magnets on the propshaft. I was just adjusting the spacing between the sensor and the
magnets and made it too close and it hit the magnets several times while the propshaft was turning. now i don't seem to be able to get a signal
from it
What's the best way to check if i've broken it? I used a multimeter across the terminals and when I passed a magnet past the sensor the
multimeter didn't budge, does this mean i've broken it?
Cheers
Pete
Probably!
It's a reed switch inside, where the magnetic field pulls 2 contacts together.
Give Greengauges a ring - I'm sure they'll send you one in the post ASAP if you ask nicely (I found them to be very helpful when I had a
problem)
rgds,
David
Helps if I attach the photo...
Pete
Rescued attachment speedosender.jpg
Oh... forget what I said earlier! 
That looks like a hall-effect sensor, unless I'm mistaken. If it is, you may only get an output when there's voltage applied.
If it is a reed switch, then what I said before still goes! 
I still suggest that you give Caerbont a ring...
David
Yes, its a reed switch version. Did you get your guages from greengauges.com?
Does your multimeter have a continuity check (beep function)? If it does set it on this.
As you move a magnet near it it should beep, if not it f**ked. I suspect it is, Pat (Avoneer) did the same to his the night before his SVA! I changed
it for him (actually fitted mine which I had taken off my car) in the carpark at the SVA centre! 
I also broke mine by overtightening it. I get a replacement fro RS or Farnell, its exactly the same (part no and everything) and is cheaper. I'll
dig out the invoice if you want the code number.
Cheers
Yeah I've checked it with the continuity function on my multimeter and can confirm it is nicely knackered
The part number/code would be really useful, I don' particularly fancy forking out £30 to Europa Spares for a new one. I did phone CAI today but
just missed their office hours, turns out they go home at 4, I expected it to be 5.
Pete