switch circuit

[Torq]

I'm new so my terminology will be off.
I have a working 12v vehicle CB that I would like to make a modification to.
I'd like for it to scan through the 40 channels on it's own.
With no modifications, I press/release the channel-up button, to go one channel up.
With no modifications, I press/hold the channel-up button it will RAPIDLY go through the channels.

My thought is to have a circuit to close the two pins on the channel up button, maybe once a second. Allowing time to hear activity on the channel.
one pin is 1v, the other is 10v-10.5v (varies each time powered up).
I tried an RC circuit but I'm doing something wrong.
It either goes one channel up just once, or it RAPIDLY goes through the channels.
T = 1 s = 1kΩ x 1 uF

 

[Roff]

1k=1000
1u=.000001
1k x 1u = 0.001 (1 millisec)

 

[Torq]

1k=1000
1u=.000001
1k x 1u = 0.001 (1 millisec)

Thanks. I've made that unit mistake before.
I'll make the changes, give that a try and report back.