73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Electrical => Topic started by: fiddler on May 03, 2017, 02:00:39 pm

Title: Clock polarity
Post by: fiddler on May 03, 2017, 02:00:39 pm

I have a 1974 chevy c10 stepside.  I am installing a 1973 gauge housing in much better shape than my old one.  The 73 has a clock.  The 74 does not have the wiring for it.  Which terminal is hot on the clock, the horizontal or the vertical?

Thanks for your response,

ricky

Title: Re: Clock polarity
Post by: bd on May 03, 2017, 08:25:29 pm

The 'vertical' terminal (image) should be B+ and the 'horizontal' terminal should be ground.  I suspect an AC Delco PT303 and possibly a PT1501 will connect to the clock with the correct terminal spacing and size, but actual fit needs to be physically verified.

Title: Re: Clock polarity
Post by: fiddler on May 04, 2017, 08:24:31 am

Thank you.  I presently have it wired with terminal lugs, but I would much rather install a connector so I will pick one up next time I am in town.

ricky