I want to install an oil pressure gauge and keep my idiot light intact for that occasion when my oil pressure takes a dive and I am not paying close attention to my gauge.

Question is, my copper tube (for the after market gauge) is supposed to get installed where my pressure sending unit was installed for the dash light. Is there another plug somewheres to allow both to be hooked up?

I have a MKIV block with 6272990 heads, filter on block (no oil cooler) if that helps. Thanks.
-Kevin