The Allied Express bulbs were as bright as the original 20 watt OEM 1142 incandescents bulbs, but not brighter which is what I wanted. So I ordered these Amazon LED bulbs,
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
They are bigger, wider, longer and have 64 versus 48 LED's but they are not brighter.
So I drilled holes into the reflector of the light fixture, and epoxied in the ceramic G4 sockets, wiring them into the 1142 socket bases. Those bases are real good quality with little screws to hold the wires. I also solder wire to wire to make sure they have a good electrical connection.
Now I have 2 LED bulbs in each fixture and they are much brighter. Lumens are additive.
I measured the current in amps these bulbs use. The Allied Express seller's bulb uses 0.1 amps. The Amazon bulbs use 0.13 amps. This is nowhere close to the advertised wattage for either bulb.
Pictures of the modified reflector with the Allied Express bulbs. The G4 bulb dimension easily allows for adding in more bulbs. I could add a third bulb but I don't feel like it is needed.
This light reflector is 50 yrs old, and like new. All 7 of them are identical.
I also added a second bulb to the Perko exterior light.
My idea of needing brighter lights, I want to install the dimmer to adjust light levels, so want the extra light for when I want it brighter. I made sure to buy dimmable led bulbs.