Hey:
The Omron relay MY4-02-DC24 is available from
www.nteinc.com or 1 800 631 1250 as p/n R12-17D3-24P, from their R12 series relays.
It looks like you can cut the unneeded pins from a 4pdt and use it for the Kenwood.
The MY3-02-DC24 may also be available from Allied Electronics, 800 433 5700 or
www.alliedelec.com a MY4DC24 is avail stock number 821-6018 for $5.63 ea. per their 05 catalog ppg 839. You must call them for the relay needed as they say to call for other apps.
Hope tis helps
Ed