1969 mustang coupe several issues i need help with

[1969]

i recently purchased 1969 mustang 302 2bl cpe. i have couple of issues with it.

1. engine kinda idles funny. it has a "putter" sound and occassionally it stalls out while idling. can this a vaccumm issue, choke, fuel issue. when i give it gas it is fine.

2. steering - when i change lanes or reaching and passing around 50mph. steering weaves. tires are not factory tires. they are 245/40zr18. i sure hate to get pulled over and get DWI for looking like im drunk when im not

3d my lights goes on/off occasionally including the dashboard lights. is that a grounding issue or headlight switch goin out from what i read in the forum

4h. i have rewired side markers and front parking wiring the previous or previous previous owner kinda jerry rigging it using plastic connectors and poor electrical taping wrapping. and before buying a haynes manual. i think i blew my turn signal cams. i get hazard light to work but not my turn signals. what color wire(s) supply power to the turn signals

I have bought some wiring from some junkyard 69 mustang and tested them to make sure they are good connection with an ohm meter. after i purchased haynes manual and checking the wiring schematics. i am left with two connectors that i have no idea where the go, maybe hood turn signals.

The 1 connector goes
Colors are
Black x--------o
White- Blue Stripe x--------o--------- <------ extra wire
Black – Yellow Stripe o--------x

The 2 connector goes
Colors are
Black x--------o
Green - White Stripe x--------o--------- <------ extra wire
Black – Yellow Stripe o--------x