I have an 1988 gl wagon I have no spark, I checked the coil with a multimeter and when I cranking I'm only getting about 5 volts to the coil, the coil is only a couple months old, the fusible links have continuity, my timing belt is intact and spinning, my rotor screw is in and the rotor is spinning, the cap and rotor are clean as well. Where should I go next?

Put a temporary jumper between coil + and battery positive  and try again.

You will have to remove it to stop the engine.

I want to add to naru's post: What voltage are you getting at the coil key on engine off?

I tried the wire and I get a yellow spark, I will check the coil with the key on

What is the little black box attached to the coil bracket?

Its the ignition transistor, Ive also seen it called an amplifier. It uses pulses from the ecm to switch the coil. I have also read that the car will run with this removed/bypassed. Ive not tried it tho.

Make sure the coil bracket is properly grounded too.

Edited September 3, 201510 yr by ihscout54

Its grounded, I may try picking up a junkyard unit for it

The wire coming off of the hot alternator stud, may have grown brittle and lost conductivity.  Same for the engine ground wire at that connection to the frame, in front of the battery.  Same goes for the wire from the bottom of the fusible link box at the connection to the battery hot terminal.

I think I've got it narrowed it down to the crank position sensor

The distributor. No code? Unless you have an extra one, or a junk yard with a disty in stock you should pull it apart and check all the internal connections, and condition. 

Went and pulled a dizzy from the junkyard and it's runs!