Hi all. I need a TRUE 'delay off' relay / timer for switching off car audio equiptment. Iv got some from ebay but it requires a constant power supply (50ma) but I can't have any current draw. Im not an expert and I can't decipher from an advert whether its 'true' delay off relay. Im only switching half an amp. If I can't find a cheap relay to do this I may have to make one! Any tips or diagram for that would be much appreciated as Iv never built any electronic gadgets before! Thank you.