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68panelman · 12-16-2015, 10:30 AM

The yellow and white are for your interior cab light. The reverse lights "I believe" are purple and blue? and would be by your 4 spd coming from the firewall. If it still has the sm420 trans, its a one and last year deal for the reverse lights.

12-16-2015, 10:30 AM	#2
68panelman Registered User Join Date: Jan 2011 Location: Delaware and Long Island, New York Posts: 3,455	Re: Reverse light wiring ? The yellow and white are for your interior cab light. The reverse lights "I believe" are purple and blue? and would be by your 4 spd coming from the firewall. If it still has the sm420 trans, its a one and last year deal for the reverse lights.