When my alternator crapped itself a few months back, the RACQ guy thought it was the battery and replaced it ($112.00 - and soon to be re-funded)....
But in an absent-minded moment, he forgot to reconnect my main earth strap which earths my negative bus bar to the battery - hence my heated grips, both sets of spotties and 12v cig lighter power socket have not worked since.
With the tupperware off for the first time from that event, I decided to chase the problem with my multi meter (I did not know the earth strap had not been reconnected yet).
So I did what one does at this point and checked all the fuses, relays and power source from the battery.
Luck for me - electrics are a beautiful example for science working by logic and I was able to identify that I had power, but no earth for the current to flow. Unlucky for me was that I had spent over an hour on this cable alone, running it through the frame so as to not be visible and reduce the 'chafing effect' of wear and tear.
When I finally traced it back to its end, I was horrified/relieved to see it was a simple fix. I was also feeling good that science and logic had prevailed.
Tonight I finish mounting/wiring the new LED spotties and put STella back together for an evening ride out to Somerset Dam with a thermos.
Cheers, Diesel
