Dome Light Switch
 

So I have decided to try and get my dome light to work. Can someone leave detailed directions please. Which fuse operates this also?

ooo000o00 im interested in this too.

The courtesy lamp fuse powers this circuit. The wire for this is GREEN with a YELLOW stripe. This goes to two places:

1) The dome light switch in each door jamb, to turn on the dome light when either door is open.

2) The headlight switch, to turn on the dome light with the headlight knob turned all the way to the LEFT.

Both switches feed the BLACK with BLUE stripe wire, which is the signal that goes out to the actual dome light itself. The dome light grounds through its bulb carriage, which screws into the roof sheetmetal.

So just replace the door jamb switch, hook up wires to that switch. Replace fuse and it should work? Headlights work fine.

I can't tell you what to replace yet because I don't know what's bad. Follow these steps (you will need a multimeter for electrical work):

1) Make sure you have 12 volts on both sides of the courtesy lamp fuse. This circuit is hot at all times, so it doesn't make a difference what position the key is in. If you have power on only one side, replace the fuse. If you don't have power on either side, then there is other work to do first.

2) Pull the dome light switches out and remove them. Make sure the terminal for the GREEN with YELLOW stripe wire in the connector has power.

3) Check the dome light switches for continuity. With the plunger all the way out (switch CLOSED), the switch should be shorted. With the plunger pushed all the way in (switch OPEN), the switch should be open. If not, replace the switch.

4) With power to the switch proven to be good, and the switches proven to be good, the dome light should light up. If the dome light does not light up, remove the cover and check for power at the dome light (not the side that's permanently grounded to sheetmetal) with the door OPEN. If you have power here, yet the bulb does not light up, replace the bulb.

This will prove out the door-side; if you get to the point that the doors turn the light on but the headlight switch will not, then we can cross that bridge.

Again, you will need a multimeter to do this, unless you want to try and get lucky by just replacing things off the bat (which may work too).

I have removed the switch in the door Kamba already. Both were stuck down. Neither worked. When you replace the switch do you just bolt it back up? Does it set itself? Or do you have to set it somehow? Also how do you get the two wires to stay up in the switch of the new door jamb switches.

The new switch threads into the door jamb, just like the original. When you buy the switch new, the plunger will stick out way farther than it needs to. You thread it all the way in, then tighten it, and close the door. Closing the door sets the switch on its own, so that the plunger goes in as far as it needs to. They make them this way so that the switch fits regardless of door clearance.

The switch just connects to the connector that's already in your wiring harness. Just unplug the old switch, and plug the new one in. If your harness's connector is gone, LMC (and others) sell replacement connector ends to splice into your harness. I responded to that question in your other thread. Try to keep all your questions about this topic in this thread; it's easier for people to keep track of.

If you get new switches, I'm sure it will all make sense to you how they go in.

Well maybe this will help?

Well my switch is hooked fine inside the dash. The two wires are hanging out of the hole of the door jamb. My switch has the plunger on one end and 3 prong connector on other end. My question is how do you get the wires that are coming out of the door jamb hole to stay in the connector?

The wires coming out of the hole in the door jamb have a matching connector. This snaps in to the new switch.

If the wires will not physically stay in the connector that's part of the truck's wiring harness, then you'll have to splice in a replacement connector.

hi all, I found this older thread searching for "Dome Lamp Wiring". I am a Ford Aerostar owner. Here's the question I have:

I recently purchased my third Aerostar, a 1997 XLT. It came with a tiny, unswitched, rear hatch lamp. It comes ON everytime the hatch is opened, but sometimes I want it OFF when the hatch is left open.

I found a Switched lamp assembly from an older Aerostar; It has a 3-position switch: ON-OFF-DOOR. It also has 3 wires. The dome lamp I removed has 2 wires only.

The new switched lamp has no factory provision to ground it to the body, no mounting screws, no grounding tabs, nothing. It is held to the headliner panel by spring clips and double-sided tape on two "feet". (there are two screws that hold the Lens to the lamp assembly to remove the lens for bulb replacement).

It would seem to me that the third wire might be in the main wiring harness but taped and disabled; Hard to see or get to the main harness without removing the headliner panel.

short of a headliner disassembly and a wiring harness fishing expedition, how can I wire-in this new lamp with only the two available wires?

Thanks for any help.

Sir,
You might get a better answer if you asked it in the Aerostar forum.

Aerostar - Ford Truck Enthusiasts Forums

E6RY-13713-A (replaced: D3TZ-13713-A, E3SZ-13713-A, E6DZ-13713-A, E8DZ-13713-A) .. R/L Dome & Courtesy Lamp Switch (Motorcraft SW-1399-B) / Available from Ford.

MSRP: $18.60 // FTE Ford Dealer Parts Dept sponsor tousleyfordparts.com price: $9.21.

Applications: 1973/79 F100/350 / 1978/79 Bronco // 1975/80 Granada/Monarch (R/L F/R) / 1976/77 Maverick/Comet (R/L F/R) / 1977/80 Lincoln Versailles (R/L F/R) / 1983/86 LTD/Mercury Marquis (R/L F/R ~ mid-sized Foxes).

1983/94 Ranger / 1983/95 Mustang/Capri / 1983/97 Thunderbird/Cougar / 1984/89 Bronco II / 1986/92 Aerostar / 1986/94 Tempo/Topaz (R/L F/R) / 1986/95 Taurus/Sable (R/L F/R) / 1989/02 Continental Sedan (R/L F/R).

1990/96 F150/350 & Bronco / 1990/95 Lincoln Town Car (R/L F/R) / 1991/01 Explorer (R/L F/R) / 1992/95 Crown Vic/Mercury Grand Marquis (R/L F/R) / 1997/01 Mercury Mountaineer (R/L F/R).

F/R = Front & Rear doors: Look for the above 4 doors in wrecking yards, remove switches from rear doors, will be like new.

Subscribed for future reference.

Same here!