you dont...
under passenger seat
Underneath the passenger seat.
no just one.
its connected to your positive battery cable.
The estimated cost to replace a clutch and radiator, in a 1989 Nissan pickup truck is $1100. A private mechanic may be able to do the job for less.
install a new one!!
Check the radio/Acc fuse...
Check your fuses.
The safety neutral switch on a 1989 Nissan Pickup with an automatic transmission and a D-24 engine is located on the transaxle. The neutral switch will be found where the linkage attaches to the transaxle unit.
6.5" front doors, 6" x 9" rear side sorry those sizes are for the 1989 pathfider...
Chiltons owner manual has complete eccm trouble codes