im not sure exactly; but not as much as i'd like, would have designed in myself or expected!
if you have aftermarket LED dome lights that would help lots and i reckon that's where i went wrong as i didn't realise it would be so sensitive. i had the oem bulbs in at the time meaning the current draw was too high. if it were a cheap module i would say crack on but it is a fair old wad of cash. I would love to have got it to work on mine, hence me being so determined. I did some reading from others who have burned out the same bit in the same way.