How to run wires for stereo head unit?

[Steven]

I picked up a malibu the other day and theres no stereo and the wires aren't there so agsr I need to know is what power source to use for constant I think I can just ryin a write strait to the battery right and the ground I know how to do but what circuit should I use for the power so tgeee stereo is on only when the key is turned on its 1980 chevy malibu wagon so its pretty basic but any help appreciated

 

[Sno13]

ok u will want to run ur yellow wire which needs constant power for ur memory etc. and ur ground u got it figured out so now ur gonna want to connect ur red positive wire to either ur positive on ur battery make sure its fused or u can wire it to ur ignition wire which turns on when car is on and off when car is off but remember when u have the power straight to constant power when u turn ur stereop off it will turn off but u will need constant power to ur yellow memory wire hope this helps