Re: What type of lights?
I'm guessing that the cedar tongue-and-groove you see is actually the subfloor for the upstairs or roof. There simply is no way to install wiring inside of this; all your overhead wiring will be exposed. While the NEC generally permits exposed Romex above a certain height, it's not very pretty and your inspector may grump about it. The selection of standard fixtures that are compatible with exposed wiring is minimal; most are designed to interface with a recessed electrical box.
Find an electrical wholesale house and talk to them about some of the new LED lighting options they have in their product catalogs. Many of those places will sell retail, usually with a minimum charge of $30-100. With LED, there are fixture styles that simply are not possible with CFL or incandescent. You won't find them at your big-box store.
Compared to CFLs, LEDs are more expensive, but are slightly more efficient, have a longer service life, run much cooler, and are dimmable. Some LEDs present a noticeable flicker; others don't. Different LEDs have different color casts; choose carefully as this can really affect the "mood" of the room.
Another option is track lighting. This would allow the use of CFL, incandescent/halogen, or even LED lighting.
You just might find something that fits in with the style of your house and doesn't look like a hack job.
There is also the option of dropping the ceiling to the bottom of the beams creating a cavity where wiring, boxes, and recessed fixtures may be installed, but you'll no longer have the exposed beams.
Last edited by Fencepost; 10-14-2011 at 01:48 AM.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.