What's The Technical Name For This Item?

[A383Wing]

I have this complete system that is supposed to light up the left fender indicator when you are in the gas hard...complete system including relay, vacuum pod and wire harness....I think this was used on "A" body cars...not sure about any Chargers...

thinking of putting it up on Ebag....not sure what it's called or what it's worth

[Alaskan_TA]

Fuel pacer system. See L73 at the link below.

http://www.hamtramck-historical.com/images/dealerships/DealershipDataBook/1975/75-Dart_0019.jpg

[A383Wing]

thanks.... 

[Nacho-RT74]

wow, very interesting!!! something like the driver convenience package but out of the cab!
sounds a very interesting accesory to add!