1987 Volvo 240 DL...hard-wiring the brake/tail lights...

I have attempted to hard wire the brake and tail lights but have run into a problem. Avoiding have to purchase replacement circuit boards for the lights. I have the wiring diagram for each once removing white connector. However, I am unsure of how to solder the wires correctly onto the bulb holders instead of the circuitry board.

Has anybody done this.... if so, can you send me a diagram of how you did this? I saw one on the net, but it was for a 1981 Volvo and did not show the brake/tail light.

Any help be appreciated.

Thanks