Power adaptor compatibility?

I have a G3 Dual USB 500MHz iBook with power adaptor problems. The model of the adaptor is M7332 (with the small plug). There appears to be a break somewhere in the power cord to the wall, not in the yo-yo part of the adaptor itself.
I have an older adaptor from an orange clamshell iBook. Although the yo-yo part will not fit (it has the large plug), the cord to the wall part appears to be identical (other than color).
Do you think that I could safely use the older cord with the newer adaptor? I tried it and it works, but I'm still reluctant to use it continuously. Any ideas?
G3 iBook Dual USB 500Mhz   Mac OS X (10.3.8)  

Thank you for your helpful response to my posting.
I checked the link that you offered; however, this listing only shows one type of yo-yo style adaptor (the one with the big plug). I have a feeling that my iBook (which was one of the very first small white G3 iBooks) is a bit of a hybrid between old and new because the dual USB iBooks that shipped a few months later had the newer square style of power adaptor.
I know that there are two types of yo-yo adaptors because I have both in front of me at this moment. Unfortunately, they both have the same model number M7332 (part number 922-4323?). They appear to vary only in the size of the plug at the computer/cord connection.
Can I assume that since the adaptors have the same model number (despite the plugs being different sizes) that they would use the same AC power cord (part number 922-4529?) to connect them to the wall?
Thanks again.

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