10 gauge wire through firewall - connector?

[bhap]

I am running an additional 10 ga. power wire from the rad support junction to under the dash to power a couple of relays. I have a few available holes in firewall and grommets to fit. I just hate putting a continuous wire through the firewall. Can anyone suggest a bulkhead connector for a single 10 ga wire? Double is ok too, I am reluctant to just hard wire as I know it will all come apart "soon" when paint work begins. Thanks for any suggestions. I've used the extra plug pins already.