I'll tell a couple of stories on myself in hopes that users can avoid these pitfalls. I've had to replace the 5amp fuse in the external battery harness twice now.
The first time was a result of plugging the battery harness into the same charger used for the Triumph LS. Not a good idea. Use the supplied external battery charger = Good idea.
The second time was last night. I had the modem cable plugged into the battery and was connecting the 15pin cable into the modem. It was dark and I could see the tiniest of sparks as I was plugging the cable into the modem port. At this point the modem showed no signs of power. Upon inspection of the fuse, I discovered that it was blown. So, my thought is that it is best to plug the 15pin into the modem first and use the SAE connection to connect and disconnect power.
The first time was a result of plugging the battery harness into the same charger used for the Triumph LS. Not a good idea. Use the supplied external battery charger = Good idea.
The second time was last night. I had the modem cable plugged into the battery and was connecting the 15pin cable into the modem. It was dark and I could see the tiniest of sparks as I was plugging the cable into the modem port. At this point the modem showed no signs of power. Upon inspection of the fuse, I discovered that it was blown. So, my thought is that it is best to plug the 15pin into the modem first and use the SAE connection to connect and disconnect power.