The easiest and quickest way is contact the HR Department at HON. At a minimum, they will be able to put you in touch with the current 401(k) plan administrator (the plan may or may not have changed hands since you were there). The plan administrator should be able to find your account using some personal information like your name, SSN, and/or DOB. Good luck!
Brian Pinkston, CFA, CFP® Financial Advisor Anchorage, AK
Christopher - see this answer to another question by Courtenay Shipley.
I wrote a guide on this recently. You might find it helpful: https://www.brightscope.com/financial-planning/advice/guide/10268/Guide-To-Tracking-Down-Old-401K-Accounts/ - See more at: http://www.brightscope.com/financial-planning/advice/question/10385/how-do-i-find-my-401k-plan#sthash.SD4lU3EY.dpuf