1988 Toyota truck issues?

I have a '88 truck 4x4 22RE motor

idling seems to hunt, goes up and down, vacuum leak ?

charge and brake light came on, when you rev engine it goes away, stereo does the same thing, ground issues?

when you first start in the morning, my idling seems to start of low, It should start off high and when engine warms up idling should go down to normal rpm, cold start valve?

let me know what you guys know could be the issue....

 

i would check your charging voltage at idle if the charge and battery light are coming on. usually and indication of a faulty alternator.