Start with new fuses...
You may have a burnt out bulb that is causing your tail lights and dash board lights to not come on in your 1992 Bonneville. It can also be a blown fuse that is causing your problem.
Yes, your tail lights will go out when your dash board lights go out.
Need to know what about the dash board lights.
replacing dash board lights
Where is the Dash board lights fuse of ford mondeo 2002 lx
fuel pump is in the gas tank fuse should be in fuse box on the left bottom of dash board
check your wiring for your lights under the dash or a bad ground
check the dome light fuse that could be the problem.......or interior fuse Instrument lights.
Typically your dash lights go out when you are driving with no tail/brake lights. So check those fusses to see if one is blown, this is a safety feature.
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the heater core is behind the dash board
do you have 2000 mazda 626 dash board?