Ok Im not new to the fourms just this one.
I found a 85 F150 custom and when I bought the truck it had wiring problem's beecouse,They installed a carb Inline 6 into a fuel injected harness so needless to say I put it on a duraspark box and wired it up the way it should be I also installed a 2barrel carb...

The batt wouldint hold a charge so I got a alternator with a built in regulator buuut I have the three wires on the bottom wired the way they should but the white and black wire I have coming up into the top plug that alsooo has 3 wires and one was wite sooo whats going on???

The volt meter looks like my rpm gauge if i keep hitting the gas just half and dead(back and forth)..Could this be ground idk the whole harness I had no problems im just new to wiring on this ford alternator..Help me out guys I need this truck for work and id like it to not be charging 14-15 volts at the battery

 

I did NOT keep the regulator in the truck becouse I switched to the 89 Bronco soo is that the problem??I dont want to drive this thing if its like this for I have a 2 month old batt (14V boat batt)I got for the truck I dont want to ruin..

P.S.The brake lights stay on somtimes and I have4 to hit the pedal three or four times and they go to the runing lights is that the switch at the pedal needing help or wiring?I noticed they are new lights..Cant be from 85 that 4sure

 

why would my volt meter on the dash be going haywire back and forth??Idk whats going on with it..Is one of the wires a ground??Help me please I dont want to do..the white wire is the problem..I have it runing from the bottom plug to the top plug..