Dynamator for Lazarus without Control Box

This article follows Dynamator-for-Lazarus in describing how I went about converting Lazarus, my 1952 MG TD #10855 from using a dynamo to using an alternator.  The alternator that I installed is U.K.-sourced and is called a Dynamator.  It is constructed with a mechanical output for driving the TD's Tachometer Gearbox and has a potential output of 45 amps.  I purchased the Dynamator from Abingdon Spares in Deep River, CT for about $220US.  I have no financial involvement with Abingdon Spares except  that I've been sending money to the organization since I bought Lazarus in 1988.

The first article in this series, Dynamator-for-Lazarus, describes doing the conversion by using an RB106/2 Control Box to aid in the wiring.  I've learned that it is also possible to do the conversion without having to utilize a control box, i.e., through the use of a common 8 connection wiring strip.  That is the technique used here.  The wiring strip was purchased for about $13US through Amazon and came in a package of 4 wiring strips and 4 pieces of interconnection strips.

Below is the modified portion of the WSM wiring diagram that covers a TD with a 5 terminal control box on the left and an image of the wired terminal strip on the right.  Terminals on the strip are numbered from the top down.  #1 is the brown/blue wire that feeds the Ignition Switch; #2 is the brown/white wire that connects to the ammeter; #3 contains the small yellow wire that comes from the Ignition Warning Light (it was formerly on the Control Box D terminal with the D lead from the dynamo); #4 is for the yellow/green wire that came from the dynamo Field terminal (now comes from the Dynamator's Field terminal; #5 is for the 10 gauge wire from the Dynamator's D terminal (was from the dynamo's yellow wire); #6 and #7 are for the black ground/earth wires from the wiring harness; #8 is for the black ground/earth wire that goes to a ground connector at the battery's grounding/earthing point.  The heavy yellow wires are the leads from the 40 amp fuse holder that connects the Dynamator output to the #1 and #2 terminal junction.  The red pieces are shorting bars connecting adjacent terminals.  The black covered pieces connect the three ground terminals together.

  Wire change 3                            Strip60              

These articles are bound to be getting improvements in the near future, so I heartily recommend that you refresh your browser when you check them out.





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