Modern Vespa

Scooter > 2021 Vespa GTS HPE Euro 4

Part in Question > Security Connector - Power Max Load

Questions

How much power in terms of Amps/Watt can you draw for accessories from the Security Connector in the front?

How much power in total in terms of Amps/Watt can you pull off the GTS Stator before you start draining the battery?

Noted: From researching on here, looks like the GTS 450 Watt Stator runs @ 24 Amps 307 Cold / 21 Amps 269 Hot, so not sure what percentage of that is used in the default OEM configuration.

Background

I am currently running a Garmin DriveSmart 55 GPS (Uses Max 2 Amps / 10 Watts) off the Security Connector in the front no problem, does not drain the battery.

Looking at splitting power from the Security Connector and running a pair of dimmable led Auxiliary Light Pods under the Mirrors /or/ Moving the Mirrors to the bar ends and installing the pods in mounting holes

Option 1
Gold Runway - GR EXP
1.5 Amps / 18 Watts
Lumens 2400
https://goldrunwaylights.in/product/gr-exp-3

Option 2
GR ADV 3
2.5 Amps / 30 Watts
Lumens 3000
https://goldrunwaylights.in/product/gr-adv-3

Option 3
Gold Runway - GR X4
3.33 Amps / 40 Watts
Lumens 4200
https://goldrunwaylights.in/product/gr-x4

Link for Example Video of how the Gold Runway Auxiliary Lights would function

Best not to run anything directly from the alarm connector. Use a separate fused feed from the battery, switched if desired by a relay controlled from the ignition ON wire at the connector.

There should be at least 12A spare when running above idle.

I've reached the max spare amps of the regulator on my Supertech. If I turn all my extras on the voltage doesn't stay above 14 at idle. (can write more on this later)

Ok thanks, curious to know what your running and breakdown of the power consumption

related things about my scoot:

* supertech tft dashboard which *may* draw more than regular gts dash
* supertech has the pmp / mia bluetooth hardware
* unplugged the bike finder
* lithium battery
* heated grips (4amp on max?)
* extra high beam lights 2x12W
* replaced usb with dual socket fast charger in glovebox
* dashcam plugged into above usb (always running when ignition on)
* extra brake light (led so minimal impact)
* replaced turn signals bulbs with led and the flasher unit
* manual fan control for the radiator 12->7.5v step down and a switch (for use when bike is heat soaked and no or minimal airflow through the radiators)
* extra fans in the engine bay (only used in summer on slow unsealed roads etc)

Normal volts at idle 1700rpm is 14.2 and it's 14.5 when riding (not sure what rpm to reach 14.5 but not much)

Today I did a 71km loop to the outer 'burbs via the freeway and came back home cruising through slower streets for most it. For part of the way back I had the heated grips on medium and at traffic lights the voltage would slowly drift down and down; watched it go as low as 13.3 on the dash before the lights changed. For the last part of the trip home grips were off. When I reached home I pulled to a stop and switch on highbeam which includes the extra lights and yet again watched the volts go down into the 13s before I turned off the bike and parked.

With only dashcam it is normal 14.2 at idle. At approx 20kph / 3500rpm it is solid 14.5 with heated grips + highbeam + dashcam.

edit:
- heated grips are wired to the battery with the an intelligent controller that can switch themselves off
- extra highbeam lights are direct onto the regular highbeam wiring

Awesome this is really helpful

What are you using to monitor battery / stator voltage? I did not even think of that

Extra fans? Where are you riding? I'm in South Florida where it gets over 100 extra but never had cooling issues ?

voltage on the dashboard of my supertech (and in my app).

extra fans, yeah australia gets hot in the summer and when I do a long day eg 600km then the bike gets hot by the end of the day - ok while there's airflow but once ya are stationary then I can see the temps go up on the dash more than I like.