1991 honda accord straight shift- While iddling, the engine rubs up and down, I believe the cruise control is stuck, but I don't know how to disconnect it - While running, the RPM's are higher than usual.

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on the rear of the engine on passenger's side connected to the upper radiator hose.
these honda had problem with the idle control valve, it stuck open cause the engine to surge

your linkage from the shifter to the transmission is out of ajustment, just tightin it up or loosin it witch ever it needs

It sounds like your tcm (transmission control unit) is going bad or it already is, at times when this happens you may also experience the trans not shifting or it gets stuck on a higher gear and will have to shift manually from 1-D.Usually this happens when it's really bad.

check main relay for cracks

check voltage with and without engine running
sounds like low voltage

check main fuse in the box under the hood.
tighten connections

check all grounds

Most likely are. Check to see if your brake switch performs both functions. Does it do the cruise and the brake/park lock.

Does your speedometer work properly? if not, check your speed sensor. Many times the connection to your speed sensor may be left disconnected especially after clutch replacement.

the first thing that needs to be checked is the fluid level. it may have a leak and has now gotten too low to move car. check the trans oil dipstick with vehicle running in park on flat ground. if it is low, top it off with dex lll trans oil and see if it moves better. if restored to normal shifting, ck for leakage. dont fix the leak first without checking for normal shifting down the road, you could be wasting time and money if any damage has occurred.

There is a module that controls the lights you listed, it changes the brightness when the headlights are on or off, it may be your problem.