24 Volt Auto Electrical Wiring Test

Description:

• Humming sound indicates voltage being detected.
• Connect the clamp to a negative contact
• Connect the tip of the tester to a positive contact.
• A red or green light on the tester will turn on and a humming sound will indicate that current is present.
• The light bulbs act as a diodes allowing current to flow in one direction only to avoid a back flow or shock.
• TMI560