Depends what the situation is/about that your in.
Personally, I wouldn't do it. Something I have heard way too many times and those people have gotten screwed over simply because it wasn't documented. Some people/companies cannot be trusted thus leading to "crooks".
It almost sounds like if it's undocumented, anything goes. I wouldn't go for it unless its in writing.
'97 4 dr. Tahoe
Polk Audio MM6501
Wolfram amps 3000.1, 125.4 coming soon
2 Sundown Audio X 15's Tuned @ 30Hz.
Interstate battery/Royal Excelene/KnuKoncepts Kolossus wiring