Holes in headlamp housing

[Nickolas (Nick Saltarelli)]

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XK120 headlamp loom question

I’m at the wiring stage on my XK120 project. Installing the sub-looms first. I didn’t have the pleasure of removing the wiring - a PO did that - so I don’t know how things were originally arranged. The archives are a big help. As is Viart. and the JCNA judging guide, etc. But I’m stumped on how the headlamp wire leads feed into the two headlamp pods. On the underside there’s a hole about 7/16" in diameter through which the wiring passes through a grommet, but what’s the purpose of the two 1/4" …