Phillips offers 7-way socket circuit diagram

user-gravatar Headshot
Updated Jul 6, 2011

Phillips Industries says that in the June issue of its “Qwik Tech Tips” ( newsletter, a simple easy-to-understand diagram shows the 7-pin round (J560) terminal functions as viewed looking into an open socket. The subject of the current newsletter is troubleshooting a lights-out situation, and the diagram is used as a visual aid to identify specific circuits to test to pinpoint the problem. Phillips says supplying a copy of the newsletter, along with a socket circuit checker tool, to truck drivers would help them resolve a lights-out problem quickly before they were cited during a roadside inspection.

“Qwik Tech Tips” is a monthly newsletter published by Phillips Industries that offers easy solutions to electrical maintenance issues facing trucking fleets. “Qwik Tech Tips” is designed to be a quick read that will offer useful unbiased technical advice for maintenance management and technicians, as well as drivers and others who interface with truck and trailer electrical components. Each issue of “Qwik Tech Tips” can be found at or can be delivered in PDF format directly each month via e-mail by requesting that option on the Website.