Old Fender Chorus pedal...

I have an old fender chorus pedal here and I'm just wondering if anyone knows anything about it. The only thing written on it is on the very top...it says: FENDER Assy. P/N 037659, under that is a red LED light, then the on/off switch then under that is just the word "CHORUS". There is only one input/output. Im assuming it would be a stereo jack inorder to get the in and out in one jack. If anyone has any info on this, I'd be happy to know what i have.
thanks
Jeremy