[protein87]

Apply the test leads to the two points at which the voltage reading is to be taken, in this case one lead on your load and one lead on the neutral, polarity does not matter (NEVER TOUCH TWO POINTS WITH ONE LEAD, ELECRICAL SHOCK WILL OCCUR). Be careful not to touch any energized conductors with any parts of your body. Never ground yourself when taking electrical measurements. Do not touch exposed metal pipes, outlets, fixtures, etc., which might be at ground potential. Keep your body isolated from ground by using dry clothing, rubber shoes, rubber mats, or any approved insulating material. Never touch exposed wiring, connections or any live circuit conductors when attempting to take measurements. Always test your test equipment for proper operation before use.

[fenpark15]

A Voltage Multimeter is the most important tool to have when troubleshooting an LED installation issue. They range in price from tens to hundreds of dollars. We use a basic Sperry DM-210A Digital Multimeter that can be found for $20 on Amazon. A voltage meter allows you to determine many issues that can effect an LED installation. The main tests that a voltage meter is handy for when troubleshooting is reading AC or DC voltage, checking continuity, and measuring voltage drop.

[megas]

In order to test low voltage DC power you must first turn your multimeter to the proper setting on the range selector switch and put the test lead in the proper jack. On our multimeter the DC Voltage is marked in black. As you can see there is a 200, 20, or 2 option. You want to choose an option higher than the voltage you are testing. In this case we are testing for 12VDC so we set the dial to 20. If you were testing for a voltage higher than 20 you would set the selector switch to 200.

[jondavis468]

Completing the CAPTCHA proves you are a human and gives you temporary access to the web property.

[richardmacdonald68]

If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.

[FreeMoney]

If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices.

[nacarino]

My multimeter doesn't report a complete circuit, even for a known good bulb of a different type ('regular' screw base) and I have only one fixture that accepts GU10 light bulbs. here

[frott]

I've checked the terminals on the base of light fixture and a complete circuit exists between the incoming (and outgoing) wires and the base in which the light sits. [links]

[fetma]

Trouble-shooting is challenging because I have only one fixture and one bulb with a GU10 connection. more

[phoebebright]

My gut says that it's the light but I am not sure. [links]

[kldunc]

With incandescent bulbs I could easily check to see if a bulb was damaged. A visual check of the filament was an easy initial check to see if the filament was burnt out and a test for (lack of) resistance with a multimeter would confirm whether the bulb had a complete circuit.

[buybacklinks.seos]

We first check the indicator +ve wire. Connect one end of your extended test lead to the correct terminal on the terminal block or fuse box and take your extended test lead with meter attached to the rear of the caravan. Remove the lens cover and bulb if you haven’t already done so and now check the centre contact of the bulb holder. If the circuit is OK you should get a reading of 00.00. If the reading is above this, then you have a high resistance connection in the cable. If it read ‘OC’ or ‘OL” then you don’t have a circuit. You will need to trace the wiring through the caravan to see if there is a break in the cable or a faulty connection somewhere. Assuming the circuit is OK, we will carry on. more

[SlipperySlope]

We tested the 13 pin socket on the tow vehicle (13 Pin Socket – Basic Fault Finding) and found everything to be working correctly including the connection for the Right Hand Indicator, but when the caravan or trailer was connected to the tow vehicle, the right hand indicator wasn’t functioning.

[VampireZIM]

Using one of the leads to extend the negative test lead by 1.5 metres. The crocodile clip is connected to the shrouded 4mm plug of the metres normal test lead. It is important that you ‘prove’ your test lead by connecting the tips of the test lead while set on resistance range. IN this case the reading is 00.00 so I know the lead and connection is fine to use.

[andy_3_913]

Understanding Watts, Amps, Volts and Ohms – A very basic introduction to some simple maths that allow you to work out power, current and resistance.