Farmll M firing order

Just bought my first Farmall 1948 M , Beautiful condition and everything is there. here is the story....When I went to pick it up the guy and his grandson were working on the battery. They said the starter needed a bendex. We pull started it and it fired right up in only a couple feet and seemed to run great. I took it for a ride and it ran good with some fast vibration (the fenders vibrated ect) $1900 with brand new tires all the way around great paint no dents at all ! Same owner for over 30 years the guy I got it from had just bought it at a forcloser sale. When I got it home I saw the the positive terminal was hooked to the negative. I switched them around to make it positive ground , and hit the starter button and it fired right up( after I put a new battery in, the one it had was no good) The lights were not wired right , they work now but still not sure if right (still have to check). Here is the thing. it needed new plugs and wires. I got them and a cap , went to put them on and looking at the picture in the manual I saw the wires on my tractor were different. They counted number one cylinder in the back and number four cylinder in the front of the tractor (the opposite of the manual) I hooked the wires up according to the manual and it wouldn't start. I put them the way they had it from the rear of the tractor counting 1234 and it started right up. I haven't looked at the voltage regulator yet. With the tractor off when you turn on the lights on the ammeter shows a draw with the tractor running when you turn the lights on it doesn't show a charge. Do I need to start over and get top dead center with number one and re-time the tractor ?

You will get plenty of comments on this.

The polarity of the battery MUST match the polarity of the alternator/generator. I would not have switched them without a good reason.

The firing order is 1324 counted from the front. I pull the cap and look at the direction of rotation to make sure.

The plug wiring is in a position that is different than the book, but not wrong. The distributor can be put in in many different positions and then turned to allow correct timing. When on TDC the rotor should point to the 1:30 position looking at the distributor facing forward. That is #1 (front plug toward radiator) then in clockwise rotastion number 3 plug (from front) then 4 then 2.
2-1
4-3
Like the numbers shown here.
I would not change it until other issues are sorted. If it is a generator system it is normally positive ground.
The link will get it charging. Jim
John T charging sys analysis

Thanks

The # one can be anywhere as long as the rotor is pointing to it at TDC, as long as it runs right you really do not care where # 1 is, right

Double check that order?

Sorry, wrong tractor

So if the guy I bought the tractor from thought the number 4 cylinder was the number one and had number 4 top dead center and put the rotor on facing 1:00 like the picture which is where it should be it's the same difference as having number one tdc and the number one plug wire at 1:00