I have a 1966 Dodge Coronet with a nice red, but cracked steering wheel.
Do any of you experienced restorers have any suggestions on a good way to repair these cracks?

That's a lengthy and fiddly process, but it can be done with epoxy putty such as PC7. You have to grind/file the cracks so they're V-shaped and free of loose plastic chunks, clean the parent plastic thoroughly, apply the putty and shape it, sand/fettle it to final shape, then paint the whole wheel.

PC7 can be found at most good hardware or home stores. Eastwood has a Kit and a Book.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

I've used J-B Weld a couple of times and it worked well. After 3 years, it still hasn't cracked or come out.

POR-15 makes a steering wheel kit also.

_________________
82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2