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flatheadmurre · 01-28-2018, 11:25 AM

Open up the box and have a look inside first...they use a 1.25v battery that are obsolete and if the relay is in bad shape you need a replacement driver box.
If you are going to use the box it usually needs new capacitors and a bit tinkering with the powersupply.

01-28-2018, 11:25 AM	#3
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: 6 Volt Tach connection and built in coil Open up the box and have a look inside first...they use a 1.25v battery that are obsolete and if the relay is in bad shape you need a replacement driver box. If you are going to use the box it usually needs new capacitors and a bit tinkering with the powersupply.