Limiting signal duration

I have a turnkey remote controlled relay which closes a normally open switch and lights up my 1-amp 12v DC light... The light stays on for a full second.. I can't adjust the devise to change the "ON" duration, but what could I put between the relay and the light to make the duration shorter?

"If I've said it once, I've said it a ..."

Show us all the pieces you are talking about.

Otherwise I can just say "an edge-triggered monostable".