1988 ranger 2.9 v6 4x4 I installed a volt guage a oil pressure guage and a water temp and now I have no spark after installing it has fuel pressure I drilled in theu the bottom of the dash maybe I hit a sensor or something any help would be amazing just trying to get her back on the road

 

Welcome to the forum

Nothing inside the cab effects spark, except the ignition switch under the steering column, when key is turned on ignition switch sends 12volt to coil and TFI module on distributor
Test if you have 12volts, key on, at the coil, either wire should show 12volts
If not that's the problem

There are two wires from ignition switch that provide 12v to coil
Red/green stripe wire with key on, no volts in START
Brown/pink wire with key turn to START, no volts with key on
(this was a hold over setup from when vehicle coils required a lower voltage while engine was running)

Both wires are connected to a red/green wire that runs thru the firewall and then to the coil and TFI module
If this one wire has been damaged in engine bay then no 12v to coil

 

i drilled in to the bottom of the dash and the screw on left middle side didn’t go in all the way I was afraid I maybe knocked a wire or hit a sensor of some sort but ur saying that wojdknt affect spark then ? And thanks for the reply

 

I tested from ignition to coil have power in both are they suppose to only light up when key is switch to on and does anyone happen to know where the grounds are to check ?