upgraded to Pertronix II, need set-up help on Distributor Cable, Spark Plug

[vaqua55]

Read as much as I can from the past forum discussion and still having some difficulty on figuring the correct set-up I might need for the following issues:

Let me tell you my current set-up first:

68' 250 SL with 0231 185 009 Bosch JFU6 distributor

Spark Plug: Bosch W7DC
Spark Plug Connector Ends: Metal Sleeved Factory Transistorized 1KOhm inscribed inside
Distributor Cable :(Hopefully Original) Black Bosch 7mm
Ignitor: Recently upgraded to Pertronix II set-up

Problems:
1) Set up the Pertronix II ignitor at 30Deg @3000 RPM and works perfect but at idle RPM as well as COLD start still having quite a bit of retardation(hoping it is the correct word), I increased the IDLE RPM to about 1000 RPM to get rid of the retardation but not sure if this is the right thing to do?
2) Using Becker Europa II radio I am getting a strong power click when I turn it on,
2a)and most annoyingly getting radio interference noise when driving (louder with acceleration and vice-versa).
2b)Even when radio is off I can hear it from the speakers?

From my understanding upgrading the spark plugs to W9DC should help me with the cold start and idle problem as well as reducing the NOISE interference on the radio?

Al your input is highly appreciated. If required I can take more pictures as I had this one from yesterday for your quick review!

[graphic66]

Those plug wires look old. Open the hood at night with the engine running and look for sparks from the wires. Also run your hand along them and feel for leaks. You will know when you find one.
  Is your radio powered directly from the alternator B+ terminal through the fuse box on the right side of the engine compartment as per the Becker installation instructions. Do you have a Beru capacitor SK 213/2 mounted on your alternator at B+ and a Beru SK 215/2 Capacitor mounted on your distributor  and grounded directly to the engine block? The grounding spring from the body to the hood is required, a ground strap from the block to the radiator is required, a ground between the water temp capillary tube tach cable and dashboard is required, and one from the speedomter cable and dash is required.
    All of these things are listed in the Becker radio installation guide in addition to some suppresors put at each end of the ignition wires that I am sure are no longer available. I also don't know what modern capacitors would work or if the Beru ones are still availible. The instructions claim that good suppression can only be obtained by installing the suppresion material described above supplied in the accessories carton.
    Maybee Becker USA could help with this common problem with these old non resistor ignitions in a modern way. I would like to know. My car had the radio installed so the Capacitors are there as well as the hood ground spring but I never knew about all the other grounding needed.
   I installed my Becker Grand Prix using a relay powered through a wire that comes on with the ignition and runs the radio from the alternator connrection so the radio comes on and off with the key, otherwise wired as specified it is always on unless you turn it off and we know how that ends up, with a dead battery eventually.
   And for the relay impaired here is all you need to know  http://www.6066gmcguy.org/BoschRelay.htm

[Peter van Es]

The complete Becker installation manual (in German though, but it will help you) is on this page: http://www.sl113.org/wiki/Electrical/RadioAndAntenna

It has a complete page on interference suppression.

Peter