From Rompen on RGP (http://rgparchive-removed.com/rgpforum/showthread.php?t=404856)
Steve Young’s Pinball Resource – http://pbresource.com/
A great source for a lot of vintage pinball parts, especially for
Gottlieb games. Steve has some parts you just can’t find anywhere
else. His ordering/billing system is a bit outdated, but it’s worth
it. His prices are fair and the service is great.
Competitive Products – http://www.competitiveproducts.com/list.php?id=22
My go-to place for many common pinball parts (like flipper parts)
at the best prices anywhere!
Bay Area Amusements – http://bayareaamusements.com
A great source for pinball parts. Their minimum shipping charge
is annoying but otherwise they’re a great company to deal with. This
is a good site to look up parts-by-game, especially for modern DMD
games.
Cointaker – http://www.cointaker.com/
A top-quality source for LEDs, more expensive and more fancy
stuff. GREAT customer service.
BCS Pinball – http://bcspinball.com/
Best prices I’ve found for LED lights. The only problem is their
customer service and response time leaves a lot to be desired. Often
they don’t have products in stock either.
Mad Amusements – http://mad-amusements.com/
This place has good prices and is a great source for things like
bulk rubber rings and Cliffy protectors, as well as certain parts sold
out elsewhere.
Pinball Life – http://www.pinballlife.com/
Another site with a huge online inventory. This is a place to
check when you can’t find parts elsewhere. Compare prices across
different suppliers. In many cases Pinball Life will have the lowest
price.
Boston Pinball Company – http://www.bostonpinballcompany.com/
A good source for certain Gottlieb parts, including wiring
harnesses and video displays. Also see:
http://www.docentelectronics.com/htt...stem%20One.htm
Illinois Pinball – http://www.illinoispinball.com/oscommerce/
Gene Cunningham purchased the remaining parts inventory from Bally/
WMS and has a large cache of NOS parts.
Cliffys – http://www.passionforpinball.com/
Maker of add-on protectors for areas prone to damage on pinball
machines.
Pinbits – http://pinbits.com/
A good source for plastics, add-ons and game-specific boards.
http://www.thatpinballplace.com/eproms/wpc.html
Good source for game roms at good prices.
PinballPal – http://www.pinballpal.com
Cabinet stencils and protectors and other playfield parts.
Circuit Boards and related items:
Pascal Janin – http://www.flippp.fr/
If you have a Gottlieb System 1 pinball game and need any boards,
forget about everybody else, Pascal’s boards are what you want. They
are not only solid and reliable, they extend the abilities of the game
beyond its original design. Highly recommended!
Rottendog Amusements – http://www.rottendog.us/
These guys make replacement power supply, driver, MPU, display and
other type boards for many popular pinball platforms including Ball,
Stern, Gottlieb and Williams
Great Plains Electronics – http://www.greatplainselectronics.com
Another source of power supply boards for pinball games, as well
as electronic components specifically for pinball machines. Ed
provides excellent and prompt support for all his products!
Ni-Wumpf – http://www.ni-wumpf.com/
Makers of Gottlieb Sys1/80 boards
Electronics:
Jameco – http://jameco.com
One of the largest electronics supply places anywhere.
Newark – http://www.newark.com
Newark is just freakin’ awesome. Between them and Jameco, you can
find just about anything.
Big Daddy’s Electronic Repair Kits –
http://www.bigdaddy-enterprises.com/...tlieb_kits.htm
If you want to spend a little more but get all the right
components in one kit, here’s a good source.
Alkmaar
Somers Point, NJ
Ljubljana
Grimsby, ON
Basingstoke
Wendy if your reading this... hint hint! 
Melbourne
Stuttgart
Cascais
