A guy (or gal) just can’t have too many headlights. Ha Ha! One thing about it … ya gotta have some place and some way to mount them as well as computers, smartphones, GPS nagivation, mirrors, etc. Fortunately there are options available. If you’ve got the money somebody will come to your rescue. Not all of the various means of mounting these devices is expensive, but it can get that way with some of the mounts. Some mounts are after market made by a third party and are fairly generic and fit most trikes. Some are specifically made for brand and even model. Some are a trike brand manufacturer but will work on other trike brands. All that being said if you don’t know what is available you will probably be at a loss and need some help from someone who does. I am afraid I can’t be of much help to you so don’t even ask. I am just reporting what little I know and think I understand on the matter.
There are a few different options for mounting to the front derailleur post …
Below is a Minoura Swingrip Accessory mount …
Below is a TerraCycle (not to be confused with TerraTrike) Light Mount …
Greenspeed makes a neat looking mount …
Here is an ICE mount made to bolt onto the water bottle mount on the front derailleur post …
TerraTrike does offer various mounts for lights and accessories …
This is a boom mount for a TerraTrike Rover …
I used to use this item to mount lights on although mine was black …
I used to have 3 headlights … two on the mount like shown above and the third on the Catrike accessory mount built into the front derailleur post …
Since I rarely ride after dark I decided to remove two of them so I just went back to using the original built in horizontal post on the front derailleur post.
There is also a product called The Nob, but it doesn’t seem to be available and no one seems to know when it will be …
As you can see this KMX trike has sufficient mounts for computers, GPS device and mirrors …
There are even axle mounts …
And then there are a bit more elaborate products …
Catrike cockpit mount …
Here is an offering from TerraCycle which I personally use along with the Catrike Cockpit Mounts. It is called a “cockpit mini-Tee” …
I have my computers mounted to them. Here is the one on the left side …
There are other similar products available. Most of them are to aid the rider in getting up out of the seat.
Be safe out there and …
ENJOY THE RIDE!
A FREE GIFT awaits you!
Tadpole Rider 
Love the article, I seen you have noted a mount on the axial. I have done some looking online, but gave not found them. Can you tell me where you found thrm? I like to put them on my wife’s and my trikes.
Hola Yo’ll
In looking at many of the lights that folks place/ use on their trikes — they are Mountain Bike Lights vs Road Lights.
If only they knew The Mountain Bike Spec’d Lights are not legal in many locations. What if the rider wants to go ride in a Pro-Active Lighting Safety Location or they move or they sell it ?