I finally understand why chicks did motorcycles: built-in vibrating seats. Yep, that’s right, you can install a vibrator directly into the passenger seat of your bike to give your wife quite an exciting ride.

(And apparently there are vibrating bicycle seats too?)

But why should motorcycle riders have all the fun? When I saw these products I realized that it would be pretty easy to replicate the experience in our sensible sedan. If you or your spouse are just a little bit handy with electricity it’s simple to build your own 12-volt car-powered over-the-clothes vibrator!

Here are the three parts you need to buy — all easily available from eBay or other online sources for under $20 total.

1. 12-volt male plug (for cigarette lighter).
   
2. 12-volt dimmer knob.
   
3. 12-volt vibrating massage motor (Uxcell is the most likely brand). I suggest getting a motor that includes the plastic housing, seen below.
   

Once you have all the parts, assembling the device is pretty easy. For car use I didn’t install the vibrator into the seat — you don’t straddle a car seat like you do a motorcycle seat, so that positioning wouldn’t be ideal anyway. You’ll need some wire-cutters (or needle-nose pliers) and a small screwdriver.

1. Measure your distance. How far will the vibrator need to reach from your cigarette lighter to the wife’s lady bits? Make sure to leave some slack, but you don’t want too much wire or you’ll get a tangled mess. You should also decide where you want the dimmer knob located, so you need to decide on length for the wires from the plug to the knob, and from the knob to the motor.
2. Cut the wires. And strip 1/4 inch of insulation from the tips of each wire so you can install them into the knob switch.
3. Install the wires into the knob switch. Use a small screwdriver to install your four wires into the receptacles on the knob switch. For DC (direct current) power, red wires are positive/+ and black wires are negative/-.
4. Test. Plug it in, turn on the car, and make sure it works. When you turn the knob the motor should modulate its power. If it doesn’t work, make sure your wiring is correct — is the metal of each wire in contact with the metal in its switch receptacle? Are reds in positive and blacks in negative? If your wiring is right and it still doesn’t work you may have a defective part.
5. Bundle the wires. If you have pairs of loose wires you can bundle them together to neaten things up. Use small zip ties and/or electrician tape to protect the pairs of wires and hold them together to reduce tangles.

Your new car toy has two incredible benefits:

1. Over-the clothes power. The 12-volt motor should be much more powerful than a battery-operated vibrator! This means the wife doesn’t need to get undressed to use it — it can reach through her clothes! You know we’re a fan of using a wireless remote vibrator that tucks into Sexy Corte’s panties, and it’s great for when we’re walking around, in a restaurant, or in a theater, but it also requires advanced preparation. She has to put the vibrator in her panties before we leave, and it can be awkward to reposition because it’s buried under layers of clothes. You can’t use this car vibrator walking around, but when you’re using it in the car you don’t need to mess with the wife’s clothes.
2. Infinite duration. As long as you’ve got gas in the car you’ve got vibration! The wireless remote vibrator we use can go for around 45 minutes, but this car vibrator never runs out of juice. You can use it in tons of ways: coming and going from your date; park and play while the wife performs oral; on a road trip (keep quiet and put a movie on in back!); the wife can build up sexual tension with edging while she drives home from work or the store; the husband can tease her by controlling the knob. Limitless fun!

We hope you enjoy this project. Leave a comment and tell us what you think, especially if you build a car vibrator for yourself!