Newark or Mouser
https://www.newark.com/b/molex?ost=molex&rd=molex

https://www.mouser.com/c/?q=molex

They have reference docs you can use.

I get mine from either Pinball Life or Arcade Parts and Repair, both are very helpful if you have questions:

http://pinballlife.com/

https://www.arcadepartsandrepair.com/

Best source was Great Plains Electronics. He closed but he’s working on selling the business.

If you’re just buying a few buy from the sources that pinball_eddie listed.

If you’re looking for really cheap .100 and .156 connectors and header pins read these options.
https://pinside.com/pinball/forum/topic/100-molex-connectors-where-to-find

Another vote for wirebot! They're always super fast to ship and the prices for the connectors and pins are around the price you'd pay for buying like 1k from Mouser or Digikey

Another vote for Wirebot!

Also, Pinball Life sells the good stuff.

https://www.pinballlife.com/molex-crimp-stuff-connectors-and-parts.html

One of the sad things that I constantly deal with is people who buy inexpensive Arcade Games on the internet. Frequently these multi-games (when they aren't Arcade 1-up, which are a whole different level of inexpensive), frequently the games come with crimps that resemble what you have in this kit.

And there's no way that the home owner would know, buying by swiping right on their phone, that the arcade game they just bought has connectors that aren't adequate to keep the game in working order. The connectors get loose, the problems start showing up, the service person has to tell the homeowner that the cost of getting their game to be reliable exceeds the value of the game.

One thing that is ABSOLUTELY ESSENTIAL in pinball is good connections.

As a matter of fact, an entire category of pinballs (the great Bally/Stern games of the 80's) is almost banned from my shop because of the decision to use poor connectors. It's taking a LOT of hours of labor to replace connectors designed for 35 insertion-removal cycles.

So much labor that unless it's a KISS pinball that I can sell for $7k, I usually can't justify the cost of getting the game in sellable condition.

While this is your game, and you can do what you feel is necessary in order to get your game working...

Use better parts.

Your pinball is worth some money. It's likely to be worth more money as time goes on. Spend a few more dollars, get pins and plugs that will make a good long-lasting repair.

Some technician in the future will thank you.

Wire Bot or thepinballwizard.net

Sorry this is slightly off-topic. I have narrowed down a problem on my AIQ Pro to the connection labeled with "suspect" in the attached pic of node board 8. I think I need to re-pin the molex connector. Can someone say what size of female pins are appropriate, what tool I use to take out existing pins, and where to get both? Thanks so much.

PXL_20230520_190043457 (resized).jpg

Any word on Great Plains if they sold site? Best resource they were.

Thanks so much for the quick and helpful response. Will the crimp part of my wire strip tool (pic attached) work?

PXL_20230521_152344061.MP (resized).jpg

no, you will need one specifically designed for molex KK pins in the sizes you need

Thanks so much to the help in this thread! I ordered the pins, crimping tool, and some depin tools, watched some videos, repinned the connector, and problem seems to be solved. I learned so much, fun part of the hobby.

Nope, no change in status.
Last I heard - that slacker is away on business 3/4 of the time so not much time for much else. Sure will be glad when this job is done.

I hope that slacker is taking good care of himself.

LTG : )

Jesus Christ!!! How much do you charge? Because I charge $150 an hour and can repin an entire Bally head in 2 hours, easily! And do about 3 a week. Most of them in the customers house.

This is a great resource when it comes to buying Molex connectors and parts:

https://www.findchips.com/

Put in your part number and it will search a large number of suppliers and come back with prices, minimum order quantities and how much they have in stock. What you will quickly see is, many of the recommendations given on this thread are pretty bad.... especially if you are looking to buy in bulk. After searching a few parts, you will start to see a trend on which places have good prices and which to avoid unless you like paying 2x as much.

So I've apparently spoken too soon, the problem recurred with the freshly-pinned cable. It is not the board: I had swapped in a different board prior to repinning and still had the problem.

Is there any chance the nylon 11-pin housing is somehow shorting? I don't know enough about the internals of the housing to know if that is even possible. But that's kind of the last unturned stone in my investigation.

Thanks for any advice.

Is there a z connector for molex?
This is definitely not my field of expertise and I'm just learning but I thought finding connectors would be easier than it is. Difficult to find IDC in canada so I thought. Ok molex but I have no idea what a z connector is called.

Z connectors are no longer being made that I am aware of. The company that made them, Pancon, went out of business a couple of years ago. I don’t know if the tooling was sold to anyone else. You might check pinball life, they had some legacy stock of them.