Hi,
sometimes the first ideas are the best ones.
Use the relais - job done!
BTW. Take care with all voltages above 24V. 65V can kill a horse (or your dog, cat whatever..)
Got zapped several times, nothing happend?
Wait until you caught a flew! Zapp! Heart goes out of sync, family cashes the life-insurance.
Just a wakeup call from a electrician...
Eberhard