He used small dia. PVC tubing and ran new wire through the trailing edge of the wing (it may have been the leading edge- I'll have to check back with him again).
He fed the new wire down the PVC first, stuffed it through the wing, and then pulled the PVC out after anchoring it at the wingtip. He wishes he'd left the PVC in there as conduit though. If it's not too heavy, I believe I will.
I guess the prudent thing would be to buy a piece of PVC and try it BEFORE she buys the strobes. Hmmmm........... :idea: