Wiring question 55 f100

So my 55 f100 came with a 12 volt starting solenoid (which was also bad...) so I replaced it with the correct 6 volt unit but now my problem is that the coil wire that was labeled "to battery" was on the 2nd post that is not on a 6 volt coil... On a 6 volt system where would I put that wire, the pos or neg side of the battery? Since it is positive ground I would ***ume it would go to the negative side, is that correct? For anyone that has an f100, is there anywhere I could run the wire under the hood so I dont have to run the wire all the way to the battery? Or could I run it to the ignition? If I can run it to the ignition what post would I put it on?

 

Your post is kind of confusing. Did you switch in midstream there from talking about the solenoid to asking about the ignition coil, or are you still talking about the solenoid?

If you were asking about ignition coil, and you want to stay 6 volt and positive ground, the the hot wire from the ignition switch would go the negative side of the coil.

If you were really still referring to the solenoid and the two small posts that are on a 12 volt unit, the second wire there usually feeds a full 12 volts to the input of the ignition coil while starting. It would not be needed on a 6 volt solenoid and just use the one wire coming from an ignition switch or starter ****on.

 

Are you sure it is still 6Vs and has not been updated to 12Vs sometime in the last 50 years? Check the headlights. They are marked if 12 Vs.

 

You don't put it any where. 12 volt ignition systems have a coil that ordinarily operates on 6to 8 volts. This current has been "metered down" from 12 volts by routing it through a resistor. For quicker starts the coil gets a full 12 volts by byp***ing the resistor when the starter is engaged. 6 volts ignition systems just run on 6 volts all the time with no resistor required. The terminal that you are concerned about supplys the full 12 volts.
If you plan to run a 12 volt battery keep the 12 volt solinoid. Although the truck was born with a 6 volt system it is highly likely that the entire electrical system has been changed.