wires
Fleet Mechanic
Joined: Aug 2011
Posts: 1,576
Likes: 262
The four prong circle one with a red, yellow, black and brown/white tracker should have a cap on it and is for the trailer harness which you probably don't have.
The round one with two wires, red and green (I forget the tracer colors) and should have a cap on it, is for the rabs sensor test connector.
The rectangle two wires one with blue and blue/black is the 4x4 indicator and 4lo indicator.
If you have a three wire one hanging around that same area that looks like it plugs into a headlight, that's for the water separator that someone removed.
Ford used one engine bay harness for all configurations and just capped off what wasn't used.
P.s. pics of random plugs tend to help identify them
The round one with two wires, red and green (I forget the tracer colors) and should have a cap on it, is for the rabs sensor test connector.
The rectangle two wires one with blue and blue/black is the 4x4 indicator and 4lo indicator.
If you have a three wire one hanging around that same area that looks like it plugs into a headlight, that's for the water separator that someone removed.
Ford used one engine bay harness for all configurations and just capped off what wasn't used.
P.s. pics of random plugs tend to help identify them
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Fleet Mechanic
Joined: Aug 2011
Posts: 1,576
Likes: 262
To retrieve abs codes, look under the drivers side dash on the large bundle of wires coming from the firewall, you will find a single plug with a black/orange wire, turn the key on (don't need to start it) and using a piece of wire ground out that plug for a second, this makes the abs flash out codes using its light, count the blinks and lookup what the code means.
Side note: if the red e-brake light is on and the e-brake isn't set or stuck down, check the master cylinder for low brake fluid or the vacuum pump on the engine for low vacuum output.
These two things can cause the abs light to come on.
Also, if the abs light comes and goes, you have to pull the code before turning off the truck as the abs computer can't remember them when the key is turned off.
Side note: if the red e-brake light is on and the e-brake isn't set or stuck down, check the master cylinder for low brake fluid or the vacuum pump on the engine for low vacuum output.
These two things can cause the abs light to come on.
Also, if the abs light comes and goes, you have to pull the code before turning off the truck as the abs computer can't remember them when the key is turned off.
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