Delay to energise relay

Please see attached diagram. I would like to delay the +12V supply which energises the relay coil of about 0.5 to 1.0 seconds. The coil is energised when the car door opens, and then after a short delay the circuit (blue wire) is broken. What do I need to add (in the dotted red box) to achive the desired result? - Is it a combination of resistor & capacitor?, if so what values & how are they connected? Please help, thanksTim Taylor

Thanks terryr https://www.the12volt.com/relays/page5.asp Is the 3rd diagram on the above page the correct one? 'Pulsed to Steady Output' - If it is, I can't see how it achieves a delay as there is a direct connection to pin 86 on the relay, and the current dosn't 'go through' any components, except for the diode. Shouldn't the current flow go through a capacitor & resistor connected in parallel or something?. Looking at the 1st diagram, 'Constant to Momentary Output' it uses a 1kµf capacitor & a 10k resistor, to achieve a 0.5 sec delay - is this correct? Thanks for your help TimTim Taylor