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Re: Are Autolite Distributor Wires Garbage? (archive)
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Posted by John Aho on June 26, 2001 at 17:25:02:

In Reply to: Are Autolite Distributor Wires Garbage? posted by Scooter on June 25, 2001 at 23:29:27:

BMW 2002 plug wires are not resistor, the resistance is in the connectors (both ends, plus the rotor). The wires are copper wire conductor (which means the 7 mm insulation is plenty thick enough, as the solid core is way in the center.

Resistance wires are often carbon conductors, with ribbons of carbon impregnated material inside. These are the type that have a certain number of ohms-per-foot, like 1K or something. Crappy design, but widely used due to low costs. The conductors age poorly with heat, and break when you touch 'em. Plus, the insulation is not as thick (for the same 7 mm dia.) as a straight wire core set.

Bosch sets are not always made correctly, either. I have seen Bosch sets for BMW that used resistor connectors AND resistor wire! Be careful & buy the right stuff.

// John

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