User's Guide

various placements until you find a suitable spot. For the velcro attachment to work, you’ll want
to choose a spot on the front wall that’s flat for the entire size of the module (hint: avoid the big
round black plastic plug).
Mounting is straightforward:
1. Ensure that both velcro strips are fixed together.
2. Remove the adhesive backing from one side; fasten it to the back of the OVMS module.
3. Using a clean dry cloth, clean the area of the car passenger footwell wall to which you
are going to attach the module.
4. Remove the adhesive backing from the side of the velcro strip facing the car, and then
firmly push the OVMS module into place - holding it still for a few seconds to allow the
adhesive to work.
5. You can then remove and reinstall the OVMS module as desired via the velcro.
Antenna Installation
You will find the performance of this antenna fantastic - and much better than even your
cellphone, but proper placement is essential. Since it has a very long cable, you can place the
antenna just about wherever you want, but please ensure it is high-up on the car and away from
any metal objects that might interfere with the signal.
Possible areas include the bottom of the windscreen/windshield on the passenger side, the top
of the windscreen on the passenger side (hidden by the sun visor), behind the passenger on the
side pillar, in the rear window, or under the dashboard (for the brave and experienced at
dismantling Tesla Roadster dashboards).
The antenna is connected to the port marked GSM on the OVMS v3 module. The GPS port is
not used on the Tesla Roadster (as your car already has GPS installed and we can read that
positioning information off the CAN bus directly).
Antenna beside rear passenger headrest
The antenna cable is long enough to reach back to the area around the left side seat head. This
approach is generally easiest. The module is placed in the left seat footwell, near the diagnostic
port connector. From there, the antenna cable is routed through the base of the waterfall, under
the door sill, and up the side of the door frame.
The door sill is held in place by velcro and is easily removed. You may have to loosen the
“waterfall” (held in place by four screws around the fuse box area). The antenna cable can then
be placed on top of the metal of the chassis sill, between the velcro strips, and routed up
through the existing plastic trunking. At this point, the door sill can then be put back in place.
OVMS v3 User Guide Page 67 / 86