First remove the negative battery cable from battery. Then get under truck and remove the wires from the starter solenoid, making sure to mark them to which terminal each goes to. Then remove the two bolts holding the starter and then lift out the starter and solenoid. That is how hard it is.
The starter relay can be found underneath the hood on a 1991 Nissan pickup. The starter relay is beside the battery on the passenger side.
look by passenger tire by oil filter
passenger side, on fender well by positive side of battery. ;)
inside starter
The 1995 Nissan truck starter relay switch is located in the fuse box. The starter relay switch will be in the third column.
Need to know what size engine you have in order to answer your starter problem. 1993 Nissan pickup with v-6
inside starter.
Look on the passenger side behind the battery for a Blue box with two double pin connectors on the bottom
No
on the right side of the pickup follow the positive cable.
Underneath the passenger seat.
under passenger seat