I did a search and didn't find anything on these... so I was originally going to make a bunch and sell them for $20, but I figured...what the hell. Below is a wiring schematic and part numbers for everything needed to make homemade MIL's. Cost from Radio shack: about $8. If you opt to not use the optional PC board and connectors, the cost drops to about $4. This does require soldering the resistor and capacitor inline, but it's better than paying $60 for them elsewhere...

 

...

 

i used to build them myself too, it is very easy!


main thing is use some shrink tubing and a good bit of electrical tape to keep them dry, or else when you hit a puddle your going to see the check light for a few days...........

 

I use a liquid "electrical tape" on all connections. dries solid and is completely waterproof and air tight.