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Old 03-18-2003, 02:23 PM
Registered User
Join Date: Sep 2002
Location: Denmark
Posts: 412
w124 - resistor in spark plug wires?

Today i checked out my distributor cap and spark plug wires.

The cap had a lot of nasty residue on the copper points. -Dremel'ed it away but will get a new cap asap.

As i understand it, the wires has a specific resistance which may be wrong if i buy aftermarket wires. Right?

My wires are Bougicord wires. Is that aftermarket stuff or OEM?

The resistance in the wires were as follows:

1: 1870 Ohm
2: 2325 Ohm
3: 3219 Ohm
4: 3180 Ohm
5: 4360 Ohm
6: 4940 Ohm

The increasing resistance is of course due to the increasing lenght of the wire.

But if there is this much difference, how can it be a problem to buy aftermarket cables? -OEM's are $240

Never criticize someone until you've walked a mile in his shoes. That way, when you do, you're a mile away -and you have his shoes!

'86 300E optically converted to '95 E300 (Sold)
-Blauschwarz on silver
-Black leather
-17" AMG & 15" AMG for winter
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Old 03-18-2003, 02:56 PM
sunil190e-1.8's Avatar
Registered User
Join Date: Jun 2002
Location: uk
Posts: 236
you could get a set of ignition wires-the complete set for about $120 from the fastlane website-there is a choice of 3 qualities-bosch,beru or other.

that is what i would opt for rather than pay the dealer(stealership) for the oem.

i am satisfied that the standard of bosch or beru would be the equivalent to the oem product and, if fact, these 2 suppliers do provide parts to mercedes benz and the dealer puts the badge on them to charge the extra money.
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Old 03-18-2003, 03:30 PM
Registered User
Join Date: Sep 2001
Location: Austin, TX
Posts: 563
If you get new wires, get the Beru wires and forget about all the rest.
Mike Heath
1988 560SL Black/Palomino
1988 300SEL Black Pearl/Burgandy
1984 500SEC Anthracite Grey/Palomino
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