When the A/C is switched on the engine ecu increases the idle speed by a few hundred rpm to make sure the engine does not stall and keep a "smooth" idle. This is normal.
Also, the A/C system can demand some 10bhp or so during its operation - which is why some people will switch off the A/C when doing an overtake for example.
So, if you want the power back ...
The radiator cap to top up the coolant is just to the right of the battery.
The item in a red circle top left is not a cap but a braking valve (most likely) or abs unit (possibly) - either way don’t try and remove it : it is not just a “cap”.
The item in red at the bottom is one of the A/C charging or access ports - do not open it unless you have the ...
This sounds like a poor or loose connection or a broken cable somewhere.
You need to check, inspect and test each cable and connection between the battery and the alternator - including all the ground cables / connections. When testing the cables you need to pull or stretch them to check they are physically ok.
As stated in the manual the recommended grade is 20W40 for that model and year.
Maruti Suzuki recommend various manufacturers oils - and offer co-branded versions under the following part numbers:
Shell Helix: 99999M20W40-SHL
Total Quartz: 99999M20W40-TTL
Any of those will do the job.
On most vehicles, the entire dome light assembly can be removed, or the cover popped off so that the bulb can be changed. You should be able to carefully pop it out and gain access to the light bulb and wires.
Most dome lights have three wires:
power when the door is open
There is usually a 3 position switch. When the switch is in ...
chrisfix has done a very good video on how to install an auxilary light. youtube link
the only difference is in your case the lights are going to be inside.
basically you need to do these
Find out the wattage of the lamps
Create fusible wire link with proper ohmage calcuated from lamps wattage
Find a way to move your wire from under the hood to inside and ...
Take the existing light out and test, using a test lamp or multimeter, each of the wires to find the one that is live.
This does assume that the existing lamp is working otherwise you need to check the supply.
tl dr: Would it run? Possibly Would it have enough power/torque to move your vehicle? Not a chance.
There are several things with trying to run the engine this way.
Every internal combustion engine has a balance applied to it so it can run relatively smoothly (there are some exceptions). All of the bits/pieces are used together in harmony to ...