Nov 20, 2012 - 09:33 AM
This question is fairly deep to attempt to answer in a venue such as this. This is better answered in a classroom and multiple hours of study.
The first issue I see is equating "ohm rating" to load. This is dangerous.
The best answer I can generate, and it is probably not what you are looking for, is experience. But honestly, how often are you testing what load a sensor puts on a circuit unless you suspect a circuit being overloaded due to a resistive short-to-ground.
Also, if you read down to the bottom of the product description, there is this:
Safe for computer controlled circuits.
If you know the amp load you can manually enter between 0-20 amps. If you are unsure of the appropriate load the Circuit Load Simulator also includes presets for the following circuits:
- fuel pump
- engine cooling fan (single fan)
- engine cooling fan (Dual fans)
- windshield wiper
- power window
- power door lock
- HVAC blower
- side mirrors
- sun / moon roof
- 4x4 actuator
- low beam headlamp
- high beam headlamp
- brake / park lamps
- HID ballast
- AC clutch
- rear window defogger
- accessory port (cigarette lighter)
- glow plug (single)
- heated seat