Hello and Namaste,
I am a Hindu but I also go to a Sikh temple (in California as well as in Canada). I really enjoy and find good feelings at the Sikh Temple, I definetly recommend you visit a Sikh Temple near you if you have not already. There are three different one's here in California I visit, and one in Burnaby BC. Two of the three here in CA are smaller, but the large one in Fremont CA near the Silicon Valley is wonderful. And frankly, I love to have "lunch" there and often have a nice conversation with other gentlemen. The others as is often the case also have an area for serving food.
I have been to Sikh Temples in India, too, but not the Golden Temple, the gurdwaras in India I visited being Akali. Right now there is a split between the BJP and SAD, so ...
Anyway, as you probably know when you enter the gurdwara you take your shoes off, and wear a covering over your head such as a turban. In front of the temple there will be a box with colored scarfs/cloth you can borrow from to cover your head. Please go, you will be blessed.