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International Automotive Technicians Network
Re: Old external phone ringer
Posted to Open Discussion Forum on 3/19/2021 7 Replies

Standard loop start telephone would be red/green line 1, yel/bk line2(if any). The bell should connect red/ bk to red /gn any order. Check that the bell has a capacitor, red/bk should show open with a ohms test. If not a cap can be added. A quick google showed... Login to read more.

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