Why can't I get a headlight to work on gyrocopter?

[Krougal]

Modding (2 separate files of course)

<append xpath="/vehicles/vehicle[@name='vehicleGyrocopter']">
    <property class="headlight">
      <property name="class" value="Headlight" />
      <property name="transform" value="Origin/handlebars" />
      <property name="bright" value=".9" />
    </property>
</append>

<set xpath="/items/item[@name='vehicleGyrocopterPlaceable']/property[@name='Tags']/@value">vehicle,vengine,vfuel,vlight,canHaveCosmetic</set>

ConfigsDump:

Snipped from vehicles.xml
    <property class="headlight">
      <!--Element appended by: "Krougal_QuieterDurableVehicles"-->
      <property name="class" value="Headlight" />
      <property name="transform" value="Origin/handlebars" />
      <property name="bright" value=".9" />
    </property>
  </vehicle>
Snipped from items.xml
  <item name="vehicleGyrocopterPlaceable">
    <property name="Extends" value="vehicleMinibikePlaceable" />
    <property name="Tags" value="vehicle,vengine,vfuel,vlight,canHaveCosmetic">
      <!--Attribute "value" replaced by: "Krougal_QuieterDurableVehicles"-->
    </property>

Results ingame:

@%$# all.

 

Am I doing something wrong, is there another related config or is it because there is no headlight on the model? I mean it is @%$#ing stupid that there is no light, especially since the recipe takes 8. Supposedly this was on Fataal's todo list from like A18 but never got done. Do I need to learn to edit unity assets now? I expected this to be a simple thing, I've also played with various origin points to try to make it work, all no go.

Edited September 1 by Krougal (see edit history)

[Ananais]

I have not messed with vehicles very much, but I think you would be correct in  that the model not having a light source means that adding a headlight In  the xml will not do anything, as it generally just acts as a trigger for the light on the model.

[Krougal]

Interestingly I found a mod on Nexus that adds seats in much the same way, except once again it doesn't add models, it just lets additional people sit on the tail flaps.

https://www.nexusmods.com/7daystodie/mods/1788?tab=posts

[Krougal]

So I guess no one has seen a need for this?