The Brown one is the Timing Mode Wire that is grounded to put the ECU in "Timing Mode" so you can set the Base Timing at the distributor. It plugs into NOTHING, It should have a dust cap....The smog guy will use it to check your timing.
The other one looks like the Oil Pressure?? Yep looking at it enlarged, single tang plug, Oil Pressure Sender.
there are no 2 plugs alike under the hood, you can't mix anything up. however it's easier the first few times to use some light colored electrical tape and a sharpie to label everything. after a few times, you'll remember...
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