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Wrenchbender Ret · 04-26-2017, 05:33 PM

The parking lights did not come on with the headlights until the 68 up models. You can change it by hooking the park lights up to the taillights.
The 4 speed SM420 did not have provisions for a backup light switch till about 66-67. The SM 465 came out in 68 & had a backup light switch on them.

04-26-2017, 05:33 PM	#7
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: Light Question The parking lights did not come on with the headlights until the 68 up models. You can change it by hooking the park lights up to the taillights. The 4 speed SM420 did not have provisions for a backup light switch till about 66-67. The SM 465 came out in 68 & had a backup light switch on them.