There should be 4 bulbs in the panel above the heater controls (red/white and black earth wire each) and 1 bulb for the cigarette lighter (only red/white wire) ...
<center>
<font color="blue"><i>1981 TR7 FHC Sprint (better known as 't Kreng)
1981 TR7 DHC (now completely dismantled)
Also a 1980 TR7 DHC, 1980 TR7 DHC FI, 1981 TR7 FHC</font id="blue">
<font color="red">
http://tr7beans.blogspot.com/</i></font id="red"></center>