Yesterday I found the wires that run fuel pump 1 black 1 tan an 1 pink the pink one was low voltage with a test light.is this the power wire or gauge wire? The tan wire has no power with test light I know black is ground.I want to hook up a 3 prong lited switch can someone tell me how to hook it up to the relay. what do the 2 wires run pink an tan are. Thank you.

 

The pink wire is for your fuel gauge, do not interrupt it or tap into it.
The black wire is the ground, leave it as well.
The tan/white wire is the power wire for the pump. This is the one you want to apply power to.

I assume you have a carb and the ECM does not control the fuel pump anymore?
In that case, you do not want to have a switch that runs the fuel pump.
For safety, you want to use the stock oil pressure sensor in the block. It will provide power to the fuel pump when the engine is running (when the oil pressure is up). But you would also want to add a prime push button to just prime the carb bowls when they are empty, before starting the engine.

Hope this helps.
Lou

 

Or an ign switched timed relay to give you a set duration if fp prime so it starts up quicker without relying on oil press building

 

Thanks BIG LOU It did help just a coulpe more questions it is a carb car an Iam pretty sure it is a all tan wire Iam running a relay here this is what I have so far I have the #85 on relay to ground of the fuel pump wire an #30 to battery now correct me if Iam wrong #86 goes to Ing. an #87 to tan wire all from the fuel pump.I touched the tan to hot an gas poured out. One last question what is a prime push button an where can I get one? Thank you very much for your HELP.Larry.

 

If you do as Lou said above you just use the factory OP switch to run the pump ( as it did stock )
and forget about connecting up the relay.

You put any 30A push button switch ( think Radio shack ) between the org and tan/wht wires so you can manually
operate ( prime ) the pump if the car has been standing for a couple of days

 

Larry

What you need is a NCTO relay, normally closed, timed open. If you wire both the coil and the contact to the 12v ignition switched source, with the key off there is no 12V ignition power and as such the pump will not run even though the contact is closed. Now, if you turn the ignition key on, the coil will close after the delay time has been met. There's 12V to the relay and pump from the ign. source and after the delay time is met the relay will turn off allowing the pump to prime and run for the duration of delay time in the relay. It will only prime the pump for a short while this way with the ign on. DO NOT wire the pump via the relay to a 12v battery source, this way the pump will never shut down because with key off the relay is always closed and it will only turn off after x secs w/ the key on. the trick is in using ign. power for coil and contact.