Hey, the turn signals in my 73 240z have been intermittent and I finally decided to bite the bullet and try and separate the turn signal assembly and I noticed that the little ball that's supposed to be on the end of the spring was missing. Basically #2 in this picture

Anyone have any idea what size that is? It might just guess and try and buy a few small ones 

I measured the hole that the spring slides into and thats 3mm so I'm probably going to try and find one that size, under the assumption that the ball gets recessed in it a bit

I was going to say it looks about the same diameter as the spring. I would think 3mm or 3.5mm

I bought an assorted kit of stainless steel ball bearings that include 2.5, 3, and 3.5mm so I think one of those should work. I'll follow up once I get them and try them out

Picked up this set https://www.amazon.com/dp/B0BS95X63W?psc=1&ref=ppx_yo2ov_dt_b_product_details so I had a few sizes and the 3mm side was right on the money (and actually 3mm from my calipers).

Cleaned and tested everything else for proper contuinity, and using a little dialectric grease to hold the ball on the spring it went together pretty smoothly. Sorry about the slightly blurry picture.

Soldered a few of the top connections and good to go!