In order to access the download and a few other sections on the website you need to be a paid-up club member and not just a free registered member. However, if you are thinking of buying the “LED Daytime Running Lights & Fog Lights” set from MX5 Parts, then IL Motorsport in Germany sells essentially the same kit, although currently it is out of stock from them. They do provide the installation instructions, the link to which is Here.
Have you read the post Help required - LED Daytime Running Light & Foglamp Kit Mk.3 in which RichardFX provides a very lucid answer to an installation problem?
Hope this helps.