So you performed an ohm test from the supply to the load and it looks perfect...
Problem is, it still has a problem. Here is a simple tool you can make to test a circuits ability to carry current and verify the circuit is performing as it should.
The older these cars get, the more corroded and brittle the wiring becomes
Tools you will need:
soldering iron
solder
a couple feet of 16 ga. wire
1157 light bulb
1157 socket (available at your local auto parts store)
The socket is highly recommended, but not totally required. If you chose not to spend the $$ on the socket, then the metal body of the bulb is ground and the 2 solder pins on the bottom serve as low and high circuits
Twist test the wiring to the socket first, we just want the high (bright light) circuit.
Put a wire on all three of the wires coming out of the pigtail, black SHOULD be ground.
Use your battery and connect the black to ground, then touch one of the other 2 wires to the positive. We want the brightest side of the bulb for this...
Once you find the brightest, solder and seal that wire and the ground wire. Cut the other wire short to keep it out of the way during testing.
You now have a circuit load tester...
To use it on a questionable circuit you will simply connect the ground wire from the bulb (black) to the battery.
The input wire from the bulb (red) to one side of the circuit
A third piece of wire from power (blue) to the opposite end of the circuit.
** ground does not have to be applied to the battery, as the body will normally supply you with sufficient ground**
That is it, if the bulb lights nice and bright/hot, the circuit has continuity and low resistance and all is well.
If the bulb doesn't light- open circuit.
If the bulb lights, but dim- high resistance in the circuit
This tool sits next to my DVOM and power probe.
A test light does not work as well due to the very low resistance bulb that is used.
A single copper wire stand will flow enough current to light a test light bulb and show very low resistance. This tool requires higher current flow to power the bulb.
I have been saved from replacing many parts using this and I felt it was worth sharing this simple, time saver with everyone.
Be merry and boost proud !!!
Problem is, it still has a problem. Here is a simple tool you can make to test a circuits ability to carry current and verify the circuit is performing as it should.
The older these cars get, the more corroded and brittle the wiring becomes
Tools you will need:
soldering iron
solder
a couple feet of 16 ga. wire
1157 light bulb
1157 socket (available at your local auto parts store)
The socket is highly recommended, but not totally required. If you chose not to spend the $$ on the socket, then the metal body of the bulb is ground and the 2 solder pins on the bottom serve as low and high circuits
Twist test the wiring to the socket first, we just want the high (bright light) circuit.
Put a wire on all three of the wires coming out of the pigtail, black SHOULD be ground.
Use your battery and connect the black to ground, then touch one of the other 2 wires to the positive. We want the brightest side of the bulb for this...
Once you find the brightest, solder and seal that wire and the ground wire. Cut the other wire short to keep it out of the way during testing.
You now have a circuit load tester...
To use it on a questionable circuit you will simply connect the ground wire from the bulb (black) to the battery.
The input wire from the bulb (red) to one side of the circuit
A third piece of wire from power (blue) to the opposite end of the circuit.
** ground does not have to be applied to the battery, as the body will normally supply you with sufficient ground**
That is it, if the bulb lights nice and bright/hot, the circuit has continuity and low resistance and all is well.
If the bulb doesn't light- open circuit.
If the bulb lights, but dim- high resistance in the circuit
This tool sits next to my DVOM and power probe.
A test light does not work as well due to the very low resistance bulb that is used.
A single copper wire stand will flow enough current to light a test light bulb and show very low resistance. This tool requires higher current flow to power the bulb.
I have been saved from replacing many parts using this and I felt it was worth sharing this simple, time saver with everyone.
Be merry and boost proud !!!
