Yes or you can use both power wires from your turn signal (since those light up with your parking lights). Your turn signal, on the inside of the headlight, should have 3 wires on it:
1. +12v for parking light
2. +12v for turn signal
3. ground
You want to tap 1 and 2 for the +/- on your side marker
1. +12v for parking light
2. +12v for turn signal
3. ground
You want to tap 1 and 2 for the +/- on your side marker
