SOLVED: 1970 dodge truck ignition switch wiring diagram Ed, 1970 dodge truck ignition switch wiring diagram. Check the attached links,instruction and guides, Good luck "I hope this helped you out, if so let me know by pressing the helpful button. Color Wiring Diagrams for Dodge Trucks 1968 1969 1970 Dodge A100 & A108 Color Wiring Diagram. $17. Quick view Choose Options. $17. Quick view Choose Options. 1969 1970 1971 Dodge D & W Truck Color Wiring Diagram. $17. Quick view Choose Options. 1972 Dodge D & W Series Truck Color Wiring Diagram Electrical System Information & Tech - '61-'71 DODGE Truck Electrical System Information & Tech This page is comprised of two sections; Compare colors with you truck's wiring to verify. Print this diagram using "LANDSCAPE" paper orientation. Image: 66wire: Wiring Diagram for 1966 Dodge Light Duty Pickups. Wiring Diagram for 1970 Dodge D or W-Series 1/2 & 3/4 Ton Pickups. Corrected 1970 Wiring Diagram - Sweptline So far, what I found was that the conductor insulator color is labeled BN when reviewing the rear lighting diagram in the Specifications chapter on page 27, wiring diagram for the D100, D200, W100, and W200. The color legend in the top right corner of the page is printed BR for brown insulator color.