The click comes when key is turned to start, correct?
Not just when key is turned to run, if there is no click when key is turned to start then your NSS may be unhooked, or bad.
The NSS(neutral safety switch) is on the clutch pedal in your 5-speed, it allows the starter motor to get power only when the clutch is in all the way.
On an automatic it is on the transmission shifter.
If there is a click when key is turned to start:
Follow the large Red cable from the Battery, it will go to the Starter Solenoid.
This is a relay that is activated by the Key being in the Start Position, that is the "Click" you hear.
Inside the solenoid is a large contact that connects the large red battery wire to the large start motor wire, lots of amps going thru there.
This inside contact can get worn and no long make the connection, so you get the "click" but no power is passing to the starter motor.
Replace this solenoid, take a picture of it so you remember which wires go where.
You can by pass the solenoid with a jumper cable, from the + battery terminal to the starter motor cable on the solenoid.
THIS BY PASSES ALL SAFETY FEATURES SO TRANSMISSION MUST BE IN NEUTRAL!
If a starter solenoid is clicking multiple times before starter turns it usually means battery is starting to die.
A good battery will have 12.5volts or higher with key off
A battery on it's way out will have 12.4volts and lower.
With engine idling the battery should have 13.6volts or higher, you need 1.1volts above batteries static voltage to maintain the charge on a battery.
1.2volts and up to charge battery