1) Apply + lead to + terminal on battery and do the same with the -
2) Note the reading (eg 5.57 volts)
3) Switch on the semaphore and apply the + terminal to the bottom screw connector on the semaphore (when its up) and connect the - terminal to a place on the body to get a good earth! This could go on the metal body of the semaphore.
4) Note down this reading and if it is quite a bit less than the previous reading then try to find where it is losing the voltage!
Hope this helps or has it just made you more confused? :lol:
+ = Positive
- = Negative
Edited by user
13 years ago
| Reason: Not specified