I am looking for something that shows where all of the vacuum lines go under the dash and under the hood for the heater and ac.            This is a factory ac car. I want to replace all the lines.  I’ve tried to find a book on the heat/ac for a 62 Grand Prix with no luck.  I think that a 62 Catalina is the same, but I’m not sure.  I hope someone out there can help me. Also is there an old Pontiac mechanic near Sacramento ca.  Thanks. 

I looked and looked for a schematic for the vacuum lines on my 63 GP. Never could find ANYTHING that showed them. If you do happen to find them let me no please. Good luck

Wrongway, do you have a Pontiac Service manual for your '63?

Yes sir I do. I can check again. I may have missed it. I know they also had an A/C manual that I do not have. I'll go look

Thanks 

Nope, nothing in either of my manuals about A/C. They had a separate A/C manual. You can get it on ebay for about $25. Not sure if these pictures will help but I screen shot the pages I did find for a 62' on line. Keep us posted, good luck bud.

Edited October 20, 20205 yr by Wrongway

I have a 1963 air conditioning shop manual..Don't know if it will help...But might be worth a try....What exactly is it that you're looking for..??

Also have a friend (work with him) with a 62 Grand Prix with functioning factory AC..If all else fails....Might be very possible to take a really  close look at it...and take photos or draw out a crude schematic....

Edited October 20, 20205 yr by TWO LANE BLACK TOP

I think I ordered one from Opgi 

I’ll let you know 

Any help I can get  I had to replace the heater core and the vacuum came off and now I don’t know how to put them back. I had a friend install the heater core and he didn’t hook the vacuum up correctly. The ac lines are working but winter is coming and my girl will need heat and me too. I think I ordered one from OPGI but I haven’t gotten it yet to find out if it shows the connections. Everything is hard to find for the 62. Thanks. If I got the right book I’ll let you know