I've lost the spring to my Grant steering wheel

[Brad]

I've lost the spring to my Grant steering wheel. It's the spring that goes into the brass tube and connects with the horn button. I've found a steel spring at a hardware store that'll fit inside the tube, but it's much stiffer than I remember the original being and it's also longer. Could someone measure their original spring and give me the length? Might as well give me the diameter just for kicks. I'm not sure if this will work especially since the spring I have is stiffer, but I figure I'll just cut the steel spring to length and install it and find out.

Also, I can't remember which way the brass 'cup' or 'tube' points when it's positioned properly. Would someone give me guidance?