[Kenth]

Std wiper blades for 1966 GP are the 15" TRICO 33-150.
With overlap 2-speed wipers use the 18" TRICO 33-183.

HTH

[mgarblik]

Originally Posted by Kenth

Std wiper blades for 1966 GP are the 15" TRICO 33-150.
With overlap 2-speed wipers use the 18" TRICO 33-183.

HTH

That should be good information for him. So his car has the overlapping 2-speed wipers. Pontiac called the articulating wiper arms. Sounds like the 18" blades will work. I would like to see a pic or 2 of the attachment situation which is the last part of the puzzle.

[al1950]

Originally Posted by mgarblik

That should be good information for him. So his car has the overlapping 2-speed wipers. Pontiac called the articulating wiper arms. Sounds like the 18" blades will work. I would like to see a pic or 2 of the attachment situation which is the last part of the puzzle.

I can send photos, but do not know how to do it on this site, help.

[mgarblik]

Scroll down below where you type in your replies to attachments. Then you can choose the pics to post. They are very specific about which file extensions you can post and file size. No high resolution stuff will post. Download and post. 5 pic maximum. You have to do them 1 at a time. Not the most user friendly site for pics.

[mgarblik]

OK, finally got off my lazy butt and got the 66 factory service manual out. Mystery solved. Those wiper blades are NOT serviceable. They are serviced by refills only. Almost no manufacturer makes refills anymore, but there are some out there. They don't list the size you need but I am guessing 17, 17.5 or 18" Measure an old one if it's still in there. If the arm, articulating joint or link are damaged, you need the whole arm assembly. Franks Pontiac parts would be a good source. Steve Barcaks Pontiac Heaven would be another. Pontiac built over 500,000 cars in 1966 that used those arms. You should be able to find them if needed. Hope this helps.

[mgarblik]

These refills should work. You could shorten them if necessary.

https://www.oerparts.com/product/*17528f.html

[al1950]

Originally Posted by mgarblik

OK, finally got off my lazy butt and got the 66 factory service manual out. Mystery solved. Those wiper blades are NOT serviceable. They are serviced by refills only. Almost no manufacturer makes refills anymore, but there are some out there. They don't list the size you need but I am guessing 17, 17.5 or 18" Measure an old one if it's still in there. If the arm, articulating joint or link are damaged, you need the whole arm assembly. Franks Pontiac parts would be a good source. Steve Barcaks Pontiac Heaven would be another. Pontiac built over 500,000 cars in 1966 that used those arms. You should be able to find them if needed. Hope this helps.

great help Sir, I attached photos, those are some wild designed wiper arm systems. I will order the refills per your link. thanks so much for your expert help. Allan

[Kenth]

These would be a direct fit:

https://www.rockauto.com/en/moreinfo...t=8852&jsn=338

[al1950]

Originally Posted by al1950

great help Sir, I attached photos, those are some wild designed wiper arm systems. I will order the refills per your link. thanks so much for your expert help. Allan

thanks so much to all Pontiac friends, I ordered the 18 inch refills from classic ind and after a challenging installation following your helpful instructions, I now have new wipers and they look and perform perfectly, so grateful to all.
thanks Allan