Electronic Controller Device (Analog)

I made this analog circuit for two reasons. One: To stop my wires from melting due to too much current. Two: To limit the load on the alternator. Instead of the lights on a trailer going through the tail light circuit on the vehicle, which caused mine to melt, It will pull current directly from the battery using relays to switch. The entire circuit is 12V operated. Contains three 12V inputs, two 12V outputs, one Negative input.

These pictures show the circuit and some melted wires similar to what I had to replace.

Step 1: Components & Materials Needed

Components:

A PCB soderness board (I reused one that I had bought for something else 10 years ago)
2 automotve 12V headlamp/taillight relays 10Amp
2 1000 Ohm (1K ohm) resistors
2 LEDs, 1 Red, 1 Yella (2V each)
An assorment of short wires (14 guage) and for the LEDs any small guage will do.
2 10 Amp fuses doesn't have to be automotive but it is easier to work with.
Wire connectors (Male/Female assortment)
A DPDT slide switch to turn off when not in use.

Materials:

Soldering Iron and RA core solder to stick
A pair of helping hands will help with alligator clips
A drill to widen the PCB board holes to take the more larger components
A lot of patience because these things are small and in a crampt area

The picture of these cool components courtesy of Google Images, and two pics of the underside of the circuit, here you can see where the patience comes in.

Comments

[florlayamp]

Thats awesome! Thats a better alternative to putting the vehicles wiring at risk for faulty trailer lights

[Sparker94]

Yep, it would cost 100's to have it fixed. its a simple, cheap, and economical way to move current w/o much resistance or connection points.