Been around the 12 volt for a while. Generally in "auto" they would be putting high amp alternator, upgrade the grounding. Put in an extra battery. Dual battery isolators so would know the vehicle would still start.
Alternators are like 40 to 120 amps and you can easily add another to many vehicles.
But in the case here, stators don't produce that much.

After about an hour or two (haven't put a timer on it) with my bike on the battery tether, the battery is dead.

I am guessing that the battery isn't that well. So when she goes offline for when I install the new exhaust system, ecu, air cleaner kit, and big bore kit. I will replace the battery also.

 

I recently added 2 6x9 ‘s to my saddle bags and had the radio flashed. The volume is lower than I had with only the 2 front speakers. I used the factory wire from the radio. Again no amp. Is there a problem with the type of speakers or is it something to do with the flash?

 

There are many factors in regards to Audio and the perception of "Loud".

For starters, to increase "loudness" [3 decibel (dB) increase]:
Double the cone space
-or-
Double the wattage

A misconception is that doubling the wattage will provide a significant increase of sound pressure level (SPL). When in reality, maintaining the Ohm load but doubling the cone space (IE: going from 4 x 5.25" speakers to 8 x 5.25" speakers) will only provide 3 dB.

By the way 3dB is the smallest value most people can notice in change.
For a perspective, Jack hammer at 3 ft away is approximately ~100 dB

​​​​​​It is also possible that the ohm load increased in the wiring
series wiring will increase the ohm load
paralleling the speakers will decrease the ohm load
In example 2, 8 ohm speakers: parallel = 4 ohms, series = 16 ohms

And not always but in many cases an amplifier will double in wattage (RMS - Root Mean Square) going from 8 ohms to 4 ohms. But there is also the possible that the amplifier cannot handle the ohm load.

Another factor is the SPL of the speaker itself. Not all speakers are equal.
In example for fun will use a JBL 12" sub-woofer (random speaker):
23hz-400hz frequency response (what it can play)
90 dB Sensitivity at 1 meter
1400 Max (peak) watts
350 (RMS) watts - commonly thought of the continuous power being sent to the speaker
4 ohm - Nominal Impedance

If the sensitivity has dropped and the ohm increased, the perception of the sound will decrease.


Much to think on

 

I have a 2023 tri-glide with all stock audio;I would like to add a better set of speakers. I have been considering the stage 2 speakers from HD Rockford Fosgate. Some people say I have to add an amp, while others say I can just add the speakers. I am not looking for more volume, but I would hope to get a bit more clarity. Additionally, some say the stock head unit is a 4 ohm system and others say it is a 2 ohm system; if someone could clarify that, it would be appreciated. Thank you in advance.

 

Never mind, I have my answer. I installed the RF stage 2s in all 4 positions, without the amplifier, and the clarity is crystal at full volume and no notable distortion. I also filled the speaker enclosures with batting, which seems to have helped. The OEM speakers and the new RF stage 2s are both 2 ohms, which answers that question also.

 

Does the 2024 Infotainment system. Have a separate radio antenna? I know they have the internal antenna.

 

OK, For clarity it is OK to install 2- RF stage 2 speakers only without an amp?
I only plan on running the 2 fairing speakers
.