Nelson Specialties, Inc. Race Car Electronics Ignition
Harnesses
Harnesses are constructed of aircraft grade mil-spec wire. This wire is silver plated copper insulated with Teflon. All Weatherpack terminals are crimped and soldered. The distributor and coil wires are twisted to minimize inductive interference. All ring connectors are high temperature nickel. All wires are color coded and labeled. All "A" wires are solid colors, while "B" wires are striped.
Full dual ignition harnesses switch between two ignition boxes, two ignition coils and two distributor pickups. The box in use is connect to the tach. Twin ignition harnesses switch between box A , coil A and distributor pickup A as a single unit, connecting the box in use to the tach. Single ignition harnesses connect a single coil, ignition box , distributor pickup and tach.
GM & Dodge
10258
Ford
10258B
GM & Dodge
102900
Ford
102900B
GM & Dodge
10263
Ford
10263B
AB Switch
Measurements are referenced from this panel.
Box Leads Measurements are referenced from this connector. Single Box Connector Measurements are referenced from this connector.
10258 10258B 102900 102900B 10263 10263B
AB Switch to Ignition Switch 38" 36" Boxes to Ignition Switch 72" 70" Box to Ignition Switch 40" 40"
AB Switch to Tachometer 26" 15" Boxes to AB Switch 60" 60" Box to Tachometer 26" 26"
AB Switch to Boxes 44" 72" Boxes to Tachometer 65" 65" Box to Distributor 36" 59"
AB Switch to Distributor 38" 80" Boxes to Distributor 68" 72" Box to Coil 30" 30"
AB Switch to Coils 38" 35" Boxes to Coils 51" 51"
10263E
Emergency Harness

Universal extended length version of the 10263 connects to the starter solenoid for power via a single pin Weatherpack connector. For testing/emergency use.
Note: AB switch is NOT supplied with this model harness. Use 2 #8811K18 (on/off) or 1 #8810K15 (on/on).
Shells for the distributor connectors are included but are NOT installed on the wires to facilitate installation through the firewall. Note: 8" coil pigtail is NOT included in the harness length.
Phone: Email: Mail:
Phone: 704.662.6600 General Information: Nelson Specialties, Inc.
Fax: 704.662.0258 info@nelsonspecialties.com 706 Performance Rd.
US Toll Free Order Line: 800.494.7532 Sales Information: Mooresville, NC 28115
Business hours: 8:00 AM - 5:00 PM EST sales@nelsonspecialties.com
Customer Support:
service@nelsonspecialties.com
Webmaster:
eparkerii@carolina.rr.com
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