Fog Light Wiring

nero6 · Mar 28, 2009

I purchased a new wiring connectors and a new headlight / foglight switch for my 87 Mustang. The previous owner had the fog light hooked up to a toggle switch and only had an LX headlight swith installed, the one without the fog light switch. I want to wire the foglight back to the the headlight / foglight switch I purchased. The issue is I can't figure out the wiring. On the replacement connector I purchased there are only two wires and both are white. The toggle switch that was in the car had three wires. One went from the toggle switch to the fuse panel to a 15 amp fuse, the second wire went from the toggle switch to a ground, the third wire goes from the toggle switch into the engine bay and connects to a orange wire which runs into a wiring harness. Can someone tell me how to wire the foglight connector?

Saleen0679 · Mar 28, 2009

Follow these instructions and you should avoid the common switch burnout problems.

Mustang GT Fog Light Fix

nero6 · Mar 28, 2009

Saleen0679 said:
Follow these instructions and you should avoid the common switch burnout problems.

Mustang GT Fog Light Fix

I did check out these instructiions before my post. The issue I have is in the corral post it indicates that the fog light switch has two wires, one that is Light Blue/Black and one that is Tan/Orange this does not seem to line up with the replacement connector I have, or the existing wiring in the car. The colors of the wiring that went to the toggle switch are completly different colors, so I do not know where to start.

Saleen0679 · Mar 28, 2009

Are there any remnants of the original harness? Maybe the previous owner cut the wires back a ways and installed new wires.

The LB/BK wire should originate at the 15A fuse in the fuse box and go to the switch connector. The T/O wire would go from the switch connector to a connector in the engine bay through the connector and on to the fog lights.

nero6 · Mar 28, 2009

Saleen0679 said:
Are there any remnants of the original harness? Maybe the previous owner cut the wires back a ways and installed new wires.

The LB/BK wire should originate at the 15A fuse in the fuse box and go to the switch connector. The T/O wire would go from the switch connector to a connector in the engine bay through the connector and on to the fog lights.

Thanks, I will check this out. The wire running into the engine bay sounds like one of the wires I need. I will check the back of the fuse panel for the end of the other wire to see if it was taped off. When the toggle switch was wired up the wire went from the toggle switch and actually connected into the fuse and not the acutal panel. If you pulled out the fuse the wire would fall out, it was not connected from behind. I assume that since both of the wires on the fog light connector I bought are white it does not matter what wire I connect to each whote wire?

93 LX · Mar 28, 2009

in my 93 LX all the wiring was there from the factory. Ijust hook up the switch and pluged in the lights...

nero6 · Mar 29, 2009

So I found the two wires that I need that were tucked behind the dash (picture 1). The last part I can't figure out is the wire that was running from the toggle switch into the engine bay. It runs through the firewall and is spliced into an orange wire which runs into a wiring harness (picture 2). This is right beside the battery tray. Anyone know what to do with this wire?

Saleen0679 · Mar 29, 2009

Is that Tan/Orange wire coming out of the dash the same T/O wire in the engine bay?
Is the wire in the engine bay going through any connectors?

nero6 · Mar 29, 2009

Saleen0679 said:
Is that Tan/Orange wire coming out of the dash the same T/O wire in the engine bay?
Is the wire in the engine bay going through any connectors?

No it was not the same tan/oranage wire coming out of the dash and it just wne t directly into a wiring harness but no connector. I figured it out though, since you mentioned connectors, I checked a few connectors near by and there was one wire coming out of one connector that was cut off and just hanging there, and it was the same color as the wire in the second picture. The previous owner had cut it and used the other end to splice in for the toggle switch. There was just enough wire at the end of the connector to splice the wire back in to the back of the original connector. Thanks!

Fog Light Wiring

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