Just finished the restoration of my Back to the Future and decided to add a custom topper. I will try and show all I did. I apologize for some of the pictures as the camera doesn't take real good pictures in low light so some of the pictures are a little fuzzy.
I started with a 1:15 scale battery operated car that had some lights and sounds. They are all over eBay.
I started by gutting the car and taking all the electronics out. The car has headlights, Brake lights, Fin lights, instrument panel lights, Flux Capacitor lights and exterior time travel strip lights. I took all the light circuit boards out and removed the clear plastic time circuit lights on the exterior and removed the blue LEDs Here are the original light circuit boards.
I ordered 12 volt prewired 5mm LEDs. I took the old LEDs out of the boards and then I drilled holes where the lights were. I then put the wires of the new LEDs through the holes and glued the LED to the board. By doing this, I was able to use the original boards to place the lights exactly where they were before. Here is one of the light boards with the new LEDs installed.
Here is a pic of the entire car rewired with new LEDs.
Then I took a piece of flat metal and bent it to shape and painted it black. Here is a pic of the bracket attached to the bottom of the car.
Here is a pic of assembling the car. FUN FUN.
For the wiring, I wired two different circuits. I wanted the headlights, brake lights, interior lights and fin lights to be illuminated when the machine is on. Then the blue exterior time travel lights are on another circuit. I took all the positive wires of each LED in each circuit and tied them together. I then took the negative wires of each LED in each circuit and tied them together. I then hooked each of those bundles and attached them to a single wire to go outside the car for the connector.
Black- Negative for the continuous illumination circuit.
White- Positive for the continuous illumination circuit.
Brown- Negative for the Blue exterior time travel circuit.
Blue- Positive for the Blue exterior time travel circuit.
Here is the car with the plug attached. The wires are kept behind the bracket so they cannot be seen.
Here are the test pics of each of the lights.
Now that everything checked out the car was attached to the backbox.
I installed a switching power supply to run the undercab lighting and the lighted flipper buttons. For the continuous circuit I ran wires down to the front of the cabinet and attached to the 12 volt power. Here is the power supply.
I decided to run the Blue time travel lights to the Release flasher so using alligator clips I attached it to the flasher that is in the backbox. I used alligator clips so I can experiment with different sources for the blue flash. Playing several games I am happy with this selection but I may try some others at some point in time.
Once all the wiring was done, I re-installed the backbox vent screen.
Here is a pic of the car installed and illuminated. I will add a video in a bit.
I am thrilled with how the topper looks and operates during the game,