Under charged battery: < 12.3V
==CustomizationCustomizations==I have It should be noted that installing any electronics '''inside''' the glove boxes is probably a Battery Charger Lead (SAE)'''bad idea'''!! It gets too hot inside there and electronics will not operate properly and could even fail. This makes it simple There is an excellent article on the ST-Owners forum that shows how to attach [https://www.st-owners.com/forums/threads/st1300-powerlet-install-with-pics.9004/ install a battery tender during bike storage. The charger lead is also fused (10amp) inlinepower outlet into the fairing space just outside the right-hand glove box].
=== Battery Tender ===I have a Battery Charger Lead (SAE) on the right side of the bike directly attached to the battery terminals. (The battery is located on the right side of the bike, below the seat.) This makes it simple to attach a battery tender during bike storage. The charger lead is also fused (10amp) inline. Technically speaking, the lead could be used for any purpose - like running a wire up my jacket into a phone in my pocket or something. I just haven't come up with anything that I need or want to do with that wire except charge the battery. When not in use, I keep the wire tucked into the right side of the bike frame and it has a rubber boot to keep it dry. === Quartet Harness ===I discovered that I also have the [https://www.amazon.com/Honda-08A30-MCS-100-Accessory-Wire-Harness/dp/B00656YJ82/ Quartet Accessory Wire Harness] '''Honda 08A30 MCS 100 ''' Although there's a link on Amazon, it is unavailable for purchase there.
Installation instructions can be found on the ST-Owners forum https://www.st-owners.com/forums/attachments/0007-st1300-quartet-harness-installation-20051207-01-01-pdf.5357/ with a photocopy of the original 4-page install instructions https://www.st-owners.com/forums/attachments/honda-quartet-harness-power-plug-installation-instructio-pdf.5965/ (both are linked from [https://www.st-owners.com/forums/threads/st1300-quartet-harness-installation.7714/ this forum post])
===New Stuff / Old Stuff===
Trying to figure out what wiring was already done (and removed!). === Glove Box (right side) ===There is one hole in the glove box - plugged with a rubber grommet. That It appears that this hole contained a cigarette lighter style power plug at one point - because I found a broken one abandoned inside the fairing! The hole/grommet is about an inch or soin diameter. === Locked Box (left side) ===There are three holes cut into the locked compartment. The 1 1/4" bottom hole is sealed with duct tape. There are two more holes fore and aft at the top of the compartment.
Maybe I should get this $20 [https://www.easternbeaver.com/Main/Bike_Specific/ST1300/st1300.html#Quartet_Simplified_Harness_for_Honda_ST1300 "Quartet" simplified harness] from '''Eastern Beaver'''. It is made to simply connect to the existing wiring harness' "accessory" connector (located under the left side front cowl) and provides two outputs: a switched and an unswitched. Mating connectors and terminals are included so you can wire up whatever you want. See the [https://www.st-owners.com/forums/threads/st1300-quartet-harness-farkle-wiring-guide.26091/ ST1300 - Quartet Harness Farkle Wiring Guide] article on ST-Owners. '''This connector is already present, and unused - mated to the Quartet harness.''' I may be wired incorrectly? I need to re-check the voltage at the head end.