Ignition - Secondary System Components Improved
84BMW06GROUP 12 Engine Electrical
Bulletin Number 12 04 84 (863) Page 1 of 4
Montvale, NJ August 1984 Technical Dept.
SUBJECT: Improved secondary ignition system components
MODELS: All 1984 since 9/83
The secondary ignition system design and material has been changed to increase the durability and quality of repairs as follows:
Approximate date introduced
Description of changes into series production
Silicone ignition cable 9/83
Snap-in type cable ends 1/84
Due to their higher voltage requirements, only these improved components should be used on 318i and Motronic equipped vehicles during repairs.
Stocks of previous type ignition components should be used up on all other vehicles.
New components-identification
1. Silicone Ignition Cable Silicone ignition cable is dark grey in color and very flexible. Previous version cable is black in color and stiff.
2. Ignition Cable End
ONCE THE SNAP-IN TYPE CABLE END IS INSTALLED INTO A MATCHING SPARK PLUG CONNECTOR/SUPPRESSOR, IT CANNOT BE SEPARATED BY PULLING OR UNSCREWING.
3. Spark Plug Connector/Suppressor Identifiable by part number only.
New Snap-In Type Components/Silicone Cable parts listing
Part description Part number
Silicone ignition cable 12 12 1 705 675
Ignition cable end 12 12 1 705 656
Spark plug connector 12 12 1 289 821
Suppressor connector 12 12 1 289 825
Suppressor connector 12 12 1 289 829
Suppressor connector 12 12 1 289 837
Suppressor connector 12 12 1 289 841
Repair Procedure - See Attachment
This attachment illustrates the usage of Special Tool Set 88 88 6 121 090 for attaching the snap-in type cable end to the secondary ignition cable and inserting the assembled cable end into a matching spark plug connector/suppressor.
12 12 071 REPLACING SPARK PLUG CONNECTOR (Snap-In Type)
Cut off secondary ignition cable from defective spark plug connector.
Strip off ignition cable insulation to a length of 6 mm (1/4 inch).
CAUTION:
If any wire strands are cut when stripping off insulation, cable end will NOT crimp properly.
Slide cable end (part number 12 12 1 705 656) onto ignition cable.
Place in Special Tool 88 88 6 121 091 (crimping device). Close crimping jaws by turning bolt.
Release jaws and take out cable with crimped end.
NOTE. CHECK QUALITY OF EACH CRIMP BY ATTEMPTING TO PULL APART BEFORE ASSEMBLING INTO CONNECTOR.
Spray a thin coat of lubricant (part number 88 88 6 121 098) on guide sleeve of Special Tool 88 88 6 121 092 (pliers).
Loosen set screw (1). Slide in ignition cable against shoulder (arrow). Squeeze pliers and slide cable into connector until cable end is heard to engage.
CAUTION:
When using pliers, only clamp on the ignition cable, not the metal cable end.
Tighten set screw (1) against stop and pull out pliers (arrow shows cutaway view of assembly).
CAUTION:
Don't open pliers too wide: it is possible to split connector end.
12 12 . . . REPLACING SPARK PLUG SUPPRESSOR Use same procedure as described in 12 12 071 REPLACING SPARK PLUG CONNECTOR