Constant to momentary

There is a setup on the relays page to the left. Basically consists of a relay, a capacitor and a resistor. If I'm not mistaken it explains on that page exactly how it works. If you need a 3 second pulse, a 7500 microfarad cap will give you about 3 seconds delay. Just wire the cap and resistor in parallel on the ground side of the coil.Life moves pretty fast; if you don't stop and look around once in a while; you could miss it.

I have used the diagram on constant to momentary output and can't get it to work. I am using a light to simulate the device 12V+ on 87 and positve light lead on 30 and negative light to ground. the coil is diode protected. I am using 1k microfarad cap and a 330 ohm resistor which only gives me a short pluse. By all calculations I should get 3 seconds. I have tried everything I can think of, but no positive outcome!http://