All of our products operate on 12v DC power such as a car battery.  We do carry a step down converter that allows them to be used with 16v-24v systems.

Yes and no.  While our undercar kit's appearance may mimic that of a rope light the insides are completely different.  This is similar to comparing a shock absorber off your passenger vehicle to a custom built racing shock.  They may look the same on the outside, but they are vastly different on the inside and have much different price tags.

The majority of store bought rope lights have only 50 LEDs in a 16' section.  We have 300 and 300 LEDs means our undercar kits are significantly brighter than a standard rope light.
Store bought rope lights weren't designed to take the abuse of racing.  Ours were designed and tested specifically in the harsh environments of racing.  If you want an in-depth technical explanation, see the last comment comparing the technologies used in our product and in rope lights.
Ours weigh 10-15% less than store bought rope lights.  In the age of light weight racing parts, do you want heavy rope lights?

Not all store bought rope lights are water proof.  The connectors might be water proof but the actual LEDs are not.  If you get any water in the rope light the LED will fail.  The internal LEDs on our strips are IP65 waterproof rated so even if you cut the tubing with a pressure washer, the LEDs will remain water proof.

We use SMD LEDs for our undercar kits which, we believe, have less mass and much better vibration resistance than the DIP LEDs found in rope lights.  DIP LED technology dates back to around the 60's whereas the SMD LEDs are much newer tech.  The DIP LEDs have two, very small tin "legs" that stick out for the connections (pos and neg).  Over time with vibration and flexing these LED legs will eventually break, much like taking a piece of flat steel or aluminum and bending it back and forth until it breaks.  SMD LEDs are LEDs that get soldered to a printed circuit board instead so you no longer have the "legs" that the DIP LED have, thus making them much more vibration resistant.  This design also allows for us to have more LEDs in closer proximity which is why we have 300 LEDs vs. 50 in theirs of comparable length.  The manufacturing process of a DIP LED is much cheaper than a SMD LED as the SMD requires much more specialized equipment to make.  This is why a rope lights can be had very cheaply as compared to their SMD counterparts.  DIP LEDs also tend to pull more power than than their SMD counter parts which makes the SMD more energy efficient.

The LEDs are waterproof. The tubing may get water or condensate inside of it but it does not hurt the function of the kit. The connectors are WeatherPack connectors and help prevent water from seeping into the connectors causing corrosion.

No. The undercar kits do not allow you to connect two strips together in a daisy chain fashion. They operated independently with their own wiring harnesses. This helps to avoid any dimming issues as both kits pull the required power they need.

Yes. We use SMD LED technology to ensure that our kits are resistant to the vibration experienced in a race car. We also utilize WeatherPack connectors from the wiring harness to the LED to ensure that the connections do not lost contact.

No. Our kits come complete and ready to install from wiring to the switch. All you need are zip ties, drill and 1/2" drill bit.

They attach to the frame using zip ties you provide.

The LED on occasion will twist or roll inside the tube, this is part of the manufacturing process that can not be prevented. This does not hurt the function of the LED and because we use so many LEDs the brightness is not effected as much.

We highly recommend our eXtreme series of LED bulbs for gauges.  They have a high lumen output which makes them far superior over standard LED bulbs for brightness.

We recommend using our standard LED bulbs.  They come in a BA9 and 194/wedge bulb style to fit most warning light systems.