When i had a look at them, i saw the wiring was amputated about 3" below the gun housing (when viewed from the open back of the cab), so if there was anything special connected to it, it was removed when the case was gutted.
Also, if the guns are optical, i think that'll rule out any chance of me renovating them... Mind you, i think they'll still be worth picking up, if only for sentiment... (They may not be for Space Gun, but their heart's in the right place...) And they were free-to-a-good-home, so i can't beat the price... (It still hurts to see the Cisco Heat cab they have, just sitting there... I can imagine refitting that as a sit-down mame cab... Well, actually i can imagine it sitting in my lounge for 18 months while i 'get around to it', but let's not go there...)