Replacing Analog thermostat with White, Yellow, Red, & Black wiring with non-programmable digital thermostat Model #RTH3100C.

Please help!!

Where did the White, Yellow, Red, & Black attach to on the old thermostat?

Here is the wiring for your new stat.

http://customer.honeywell.com/techlit/pdf/69-0000s/69-1891ES.pdf