An ignorant question regarding gauge clusters...

[jabborabbo]

I'm planning on installing a gauge cluster in my '67 GMC - I have the harness in hand and a gauge cluster on order (both used OEM). The original owner of my truck installed an aftermarket oil gauge and ammeter on a mount that hangs below and to the right of the ignition switch - the oil pressure gauge is connected to a pipe that runs to a junction on the engine where the dummy light sender goes - the dummy light sender is screwed into the end of the junction, so both the gauge and the idiot light work, and I assume I can route the pipe to the oil pressure gauge in the cluster.

My question - does a gauge cluster also include an idiot light for the oil pressure? I kinda like oil pressure idiot lights - a light coming on when the oil pressure is low is more convenient than keeping an eye on the gauge. If the gauge cluster doesn't have an oil pressure idiot light, has anyone here rigged up one on their gauge cluster?

Thanks in advance for all replies, comments, insults, or whatever!