For check of integrity of a chain connect the device for verification of schemes or the negative probe of the voltmeter to the negative plug of the rechargeable battery or the grounded element.

Connect the second probe to connection in the checked chain. The site of a chain at the same time has to be energized from the rechargeable battery on condition of serviceability of sockets and the corresponding safety lock (you remember at the same time that some chains of electric equipment join only at turn of a key in the ignition lock in a certain situation).

Include a chain, connect the tester probe to connection, the next to the chain switch on the party of the checked element.

If tension is present (what the control bulb or indications of the voltmeter testify to), it means that appreciate the site between the corresponding connection and the switch has no gaps.

Continue check of a chain in the same way before detection of the site on which there is no tension that directly indicates that the rupture of a chain occurred between this point and a point of the previous check.

It is necessary to remember that the majority of problems of the opened chain are caused by the broken or weakened socket.