Introduction

Overview of the wiring of this 1963 702B Princess phone in photos and charts.

Related phone wiring post / message on Classic Rotary Phones Forum:

http://www.classicrotaryphones.com/forum/index.php?topic=3155.msg42216#msg42216

Note that this page is an updated version of the forum post.

For wiring diagrams of other phone models or years, see the Documents & Resources and Links pages.

On This Page

• Overview of Phone Wiring
• Lamp Terminal Block Wiring
• 4010 B Network Wiring
• Line Cord Wiring
• Handset Cord Wiring
• Dial Wiring
• 505A Four Pronged Plug Wiring
• M1A Ringer Wiring
• 1963 vs. 1968 702B Wiring Comparison
• Repair Road Map

Listed another way from the tables above:

• Red to L2 on 4010 B Network
• Green to L1 on 4010 B Network
• Yellow to G on 4010 B Network
• White to 3 on Lamp Terminal Block
• Black to 4 on Lamp Terminal Block

Listed another way from the tables above:

• Red to R on 4010 B Network
• White to R on 4010 B Network
• White (another one) to GN on 4010 B Network
• Black to B on 4010 B Network

(Handset Cord white wires are bigger than Dial white wires.)

Listed another way from the tables above:

• Blue to F on 4010 B Network
• White to R on 4010 B Network
• White (another one) to GN on 4010 B Network
• Green to RR on 4010 B Network

(Dial white wires are smaller than Handset Cord white wires.)

Note: This is the result of the Line Cord Repair and the 505A Plug Repair.

Comparing wiring as received and changes made to restore to service.

The project / repair links on this website can be found here (in order of repair):

1. Line Cord Repair
2. 505A Plug Repair
3. M1A Ringer Repair
   1. Before Adjustments
   2. After First Adjustment
   3. After Second Adjustment
   4. After Bias Spring Adjustment
   5. After Third Adjustment
4. Ringer Repair Videos