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Badpuppy · 09-02-2020, 09:42 AM

28-29 have "H-type" buckets, fluted lens. Conduit and socket are smaller, two wires. Single bulb reflector w/ concentric socket sleeve. 3-position light switch, off-dim-bright.

30-31 "Twolite" buckets, bullhorn lens. Larger conduit and socket, three wires. 1-bulb reflector w/deluxe cowl lights, 2-bulb w/o. 4-pos light switch, park-off-dim-bright.

Later reflectors with 1/16" offset sleeve may be used on earlier lamps.

The switch plates between the two versions are different; you may need to transfer your old plate to the new harness for it to fit properly. In any event, you should disconnect the two park lamp wires from the from the lighting switch.

Check vendors' catalogs to see parts differences between the years.

09-02-2020, 09:42 AM	#4
Badpuppy Senior Member Join Date: Dec 2017 Location: Guthrie, OK Posts: 1,144	Re: 1929 A headlights 28-29 have "H-type" buckets, fluted lens. Conduit and socket are smaller, two wires. Single bulb reflector w/ concentric socket sleeve. 3-position light switch, off-dim-bright. 30-31 "Twolite" buckets, bullhorn lens. Larger conduit and socket, three wires. 1-bulb reflector w/deluxe cowl lights, 2-bulb w/o. 4-pos light switch, park-off-dim-bright. Later reflectors with 1/16" offset sleeve may be used on earlier lamps. The switch plates between the two versions are different; you may need to transfer your old plate to the new harness for it to fit properly. In any event, you should disconnect the two park lamp wires from the from the lighting switch. Check vendors' catalogs to see parts differences between the years.