Soldering PC lights

[Nevin]

I got a good deal on some PC lights, but somehow ended up with square-pin rather than straight....

I know I could buy new endcaps (and would if anyone could tell me where to get some much cheaper than the fancy $15 ones at JL). Since I need to build a low-budget hood anyway, it occurs to me that I could just solder wires directly onto the pins and cover with a blob of silicone. When they burn out I'll just chop them off and resolder. Anyone know how I can identify which wire goes to which pin?

Also, any opinions on the advisability of doing it this way, alternate methods, sources of cheap endcaps, etc. would be appreciated.

Thanks,
Nevin