[time-nuts] Tbolt and LOCK indicator - is it there?

[Taka Kamiya]

I have a few red labeled retail version of an older t-bolt.  I'm wondering if there is a signal somewhere that will indicate LOCK condition.  I know I can read the TSIP output and parse it, but all I need is just a simple LED.  It's not anywhere in its manual and I have not seen anyone mention it or even discuss it.  Has anyone poked around inside?  Is there a secret test point somewhere?
Thank you.

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(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG