My first post and intro.

Sorry to run it too long on one thread.

we did get the 12v , 3 terminal ,Starter Solenoid ordered from Amazon yesterday. I need to check the jeep to see if the Coil is currently a 6v. (I think it is)

next up I guess will be ordering one of the lower Alternator Brackets. itwill probably be ordered from Willysworks.com, (unless there are other suggestions from the members here).

 I think someone here said the Fuel Gauge will also need to be replaced with a 12v type ?

That’s what I did then made one. 

Yes,understood,

NO existing parts, wiring, etc, will be tossed, trashed, or traded away for quite a while. everything that gets removed will be boxed, labeled, and shelved for future reference/use.

 can anyone recommend what 12v Starter Relay/Solenoid I should use to replace the existing 6v model ?

 (existing 6v model has a part number "DR1465")

on edit- is this all I need?

Being an old VW guy, I will say that the Willys is very similar in this regard. Unless you grind away on the starter it should hold up OK. Although some folks have had Bendix problems, I have not, so far anyway. Many folks just swap out the starters, & some of us continue to use the 6 volt original one.

It sounds to me kind of like your buddy will not go easy on his starter, so you may want to get a 12 volt starter just because you will not be the one to drive this rig.

Yes, the solenoid will need replaced with a 12 volt unit.

Yes, 12 volt starters are readily available. Look into a high torque starter from, IIRC, a Toyota. I have no idea as to cost, I am still running my 6 volt unit.

Your alternator/starter guy should be able to convert your 6 volt starter. Ask him about cost in both time & money. IME, It is much cheaper in both time & money to replace it with a 12 volt unit.

Heck, someone on this site converting his CJ's 12 Volt system back to 6volts may want to trade you their 12 volt starter for your 6 volt one. Post a for trade add in "The Trading Post".

Whatever you do, do not throw anything electrical away before your new system is up & has worked well for a few months. I have seen that film before, It can get mighty ugly fast!

IHTH, Cpt Logger.

OK, I got the alternator back from the shop this evening. It is now rebuilt to a 12v, neg grd, high output, self exciting, self regulating, single hot wire, ... Thing of Beauty ! ! !   

We're not real concerned with keeping it as "original as possible" or anything like that.

 Heck, ... it already a civilian CJ2A that is impersonating as a military MB, LOL !

 Converting it to a 12v system was part of the original plan anyway.

 My buddy intends to use this jeep as a camping/hunting rig 

. He's not the gear head that I am, and his words were basically,...

 "Just make it as 100% dependable as possible, Ron, ... I don't want it breaking down out on a hunt, or ten miles down some dirt road away from camp ".

 We are talking about replacing the wiring harness, to get rid of he old cloth(?) insulated wires, and provide a greater sense of confidence that we will not have any problems with it. It's going to need 12v Headlights, Tail/Brake lights, and a turn signal kit.

 He'll probably want some off-road lights front and rear, and probably an interior light, electric widsheild wipers, and it wouldn't surprise me if a electric winch gets tossed in along the way.

  We already have one of the "Arctic" aftermarket hardtops for it too. Not sure who originally made/sold it (?).

 It is aluminum construction, solid locking doors, sliding door windows, and fully insulated. I'm sure he'll want some lights in/on/around that too. 

 So ,... it's not like the electrical system is going to be "all stock" anyway.

I'm considering replacing the headlights with some fancy LED or HID types widely available on Amazon/Ebay... so those wont be looking "original" either.

 (If anyone here has them on their CJ2A, I'd love to see a pic of them)

I found these Halogen bulb types on Amazon, that even have turn signal built in.

 Now that is pretty convenient ehh ?

https://www.amazon.com/Crystal-Halogen-Headlight-Headlights-Included/dp/B077YW3WS9/ref=sr_1_5?ie=UTF8&qid=1539930079&sr=8-5&keywords=round+headlights&dpID=51PHB1gCcYL&preST=_SX300_QL70_&dpSrc=srch

So first I've got to get this electrical modification done to accept all that stuff... and then I've got to give the drive train some attention. It's got the usual oil leaks at both diff covers/yoke seals, and one at the transfer case. it's got a TINY bit of play in the steering box, that I can probably adjust a tad. Will need to look at the brakes just for my own satisfaction, as well as the spring shackle bushings and ball joints. 

Did I forget to mention the WiFi, Disco ball, FLIR, Satellite TV, and Dancing Laser lights, Dash Cam, Remote Engine start, Backup monitor,  and B-17 Motorized Machine gun turret, all to be controlled by your Smartphone or keyfob ?