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#1
03-21-2003, 02:12 AM
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420sel ignition wire resistance
hello
made a search on this but couldn't find anything on this topic. is there or has anyone ever established the resistance reading of a plug wire. i'd like to check my wires but i haven't found a simple reading for this. i've seen in the book of 700 to 1300 but it does not say plug wire. just wondering tks for the help craig
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Thanks Much! Craig 1972 350sl Red/Blk 117k 1988 420sel charcoal/Blk 140k 1987 420sel gold/tan 128k See My Cars at:http://mysite.verizon.net/res0aytj/index.html Pound it to fit then Paint it to match! There is only First Place and Varying degrees of last! Old age and deceit will overcome Youth and Enthusiasm every time! Putting the square peg in the round hole is not hard... IF you do it fast enough! Old enough to know better but stupid enough to do it anyway! 
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#2
03-21-2003, 07:44 AM
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Like most other German cars, MB uses real copper wire for their plug wires. Theoretically it should give "zero" resistance.
For radio suppression and to elevate the idle firing voltages resistance is added at the ends of the wire and in the distributor rotor. The wire ends are usually 1000ohms but some of the earlier cars had 5000 ohms on the plug end. I think all the distributor ends are 1kohm. The sparkplug connectors say what their resistance is. So for most cars a plug wire should be 2k ohms.
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Steve Brotherton Continental Imports Gainesville FL Bosch Master, ASE Master, L1 33 years MB technician
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#3
03-21-2003, 12:43 PM
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steve
thanks much for your quick reply. i appreciate your knowledge and your willingness to share. thks craig
__________________
Thanks Much! Craig 1972 350sl Red/Blk 117k 1988 420sel charcoal/Blk 140k 1987 420sel gold/tan 128k See My Cars at:http://mysite.verizon.net/res0aytj/index.html Pound it to fit then Paint it to match! There is only First Place and Varying degrees of last! Old age and deceit will overcome Youth and Enthusiasm every time! Putting the square peg in the round hole is not hard... IF you do it fast enough! Old enough to know better but stupid enough to do it anyway!
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