OEM Dome, Room or Courtesy lights Oddities

[Coolerman]

I'm starting a new thread to continue a discussion of room lights from the How to Tell if you have a Factory Soft Top thread<<<<< This is a link! Click it!

Last night I removed the windshield wiring harness from my 2/71 FJ40 to see where the extra wire (red/green stripe) that appears under the dash, but not at the top of the windshield went to. See pics. Pic one shows the end under the dash and pic two shows where it's taped up inside the harness. It terminates in the harness right where the harness turns toward the wiper motor at the top. I guess harp top models has this wire exit the harness and go into a plug?

The oddity? Why would Toyota have the harness maker install the wire, but cut it off inside the harness? Why not just leave the plug on? Maybe it was a dealer installed option to have the room light?

I have looked for pics of the wiring between the top of the windshield and the light in my archives, but have not found a single pic of this wiring.

Can someone with the hard top room light take some pics of the wiring harness between the top of the windshield and the light itself?

Also anyone with a factory soft top who may have this wiring intact. Take pics and post up.

 

[Coolerman]

I'm adding another request here: Can who ever posted the 1969 Chassis Harness manual with the schematic contact me? This is the document that has the harness layout, schematic and wiring connection points. I cannot read the small print on the Chassis Wire Harness page and need to know if it can be read on the original.

See pic of what I am referring to...

 

[MoCoNative]

On my 4/73 that wire seperates from the harness, as you speak, and has enough wire to go through a hole in the windshield frame and come out the top. At that point it has a female bullet connector, as it is always hot. Then a wire plugs into it that runs down the inside gutter of the hardtop, under two or three, FJ-40 standard double tab wire retainers, that are spot welded up in the gutter. Where the dome light bolts on the roof gutter with two bolts that pass through the hardtop side panel and roof into welded nuts on the back side of the dome light bracket. Funny thing there is that the dome lamp has a two wires that leaver the back of the lamp itself. One red the other white or black as I recall and go into a molded two prong plug, like 4 prong trailer plugs. From there the wire along the gutter plugs into it with a matching two molded two prong plug, but the second ground wire comes straight off the plug and loops back to the dome light and attaches under one of the mounting studs for the lamp as a ground. Why the lamp does not just ground int he frame I don't know, instead it has an external ground wire that grounds back to the lamp.

The factory rubber gasket under the roof cap has an extra hole there, as does the quarter panel for the lamp, as I recall.

Your photo looks like the wire broke off, and it may have. Being in the sun and exposed, and forced to make a radical turn out of the loom for the wiper motor, could let the small 2-3 inch wire with butt connector break off, and no one would know. Mine always seemed a tad strained to come off the loom and stick through the hole. If someone took your top off alot, it may have been damaged that way too. (Sorry, can't recall how long you owned your 71, or if it is factory ST or HT)

 

[Dusty 66]

I have the same repair manual I'll look, but the printing is very fuzzy

On my 66 the room light position is under the heater controls and could not have been installed
I did not have an extra red wire on the windshild harness so I added one and added the Dome lamp on the door bow

 

[Coolerman]

Mine, was definitely cut off INSIDE the harness at the factory. I untaped it last night and I could tell the tape had never been disturbed. I do have two holes in the windshield frame right at the top of the curve. I guess there should be grommets in those for the wire. There is a pic of that weird wired two prong connector in the other thread.

The hard top I have is of course not original to my truck. I'll check that also for the clamps and holes. If you think if it sometime, take a few pics of all that and post it up.

Appreciate the information.

 

[Coolerman]

Dusty, did you have the holes in the windshield frame for the wires or did you just run them external?

 

[fj404life]

My 69 has a dome light. I will get some pics for ya. Wires ran up through windshield frame out through a grommet, couple inches hanging with a plug.

pics! (light Switch is small pull switch at bottom right)

 

[Dusty 66]

Dusty, did you have the holes in the windshield frame for the wires or did you just run them external?

yes, I also used a existing hole on the dash for the push pull switch I think the PO drilled for the power wire for the windshield mounted spot light that was on the truck when I bought It

The interior light has always been a mystery to me too I figured It had to have a dome light on the soft top so I mounted the OEM light where I thought best on the Pakistani reproduction bows.
The picture of the bracket holes where on Earlier models had a room light,the same holes mount the heater fan and vent bracket

 

[MoCoNative]

That is what mine looked like, small bit of wire through the frame, no grommets on mine, but maybe they were gone. My bracket for the lamp is metallic silver just like the instrument cluster etc...

The wire lays in the trough where the edge of the headliner is. My original top had the tabs, like the front fenders do. But I rolled a few years ago and ruined that one. I replaced it with a newer lid, and it did not have them. Also had a shorter front overhang and more rivets for anyone comparing pre and post 75 fiberglass pieces. Also lacked a hole for the dome lights double bolt mount up there. I then rolled on my side again a couple years ago, hence the morph to a soft top now Wire never seemed to jump out of there, just lay it in there, maybe poke it under the edge of the headliner if you end up a bit long on it, should work fine. Only easy way to spot weld them in, is if the gutter is seperated from the fiberglass.

 

[Dusty 66]

Note left room light, Right heater controls and dome light switch above head lamp switch

 

[Coolerman]

Great pics Dusty! Exactly what I needed. Now I know how it all goes together and can make my room light harness complete.

I checked my hard top and it does indeed have the holes for the room light bracket. I also found a length of blue wire with a female bullet on it laying in the lip area! I had never know it was there... It is a OEM bullet connector, but I don't think the wire is OEM for the room light. No telling where it was robbed from...

My next mystery involves a couple of LW wires on the drivers side under the hood close to the washer pump wires. I ohmed them out but could find no termination point anywhere on the harness. I will be pulling the harness completely apart soon to track down a melted wire and to add several circuits to the harness. I'm sure I will find where they go.

 

[pbgbottle]

i have a copy of that manual

I'm adding another request here: Can who ever posted the 1969 Chassis Harness manual with the schematic contact me? This is the document that has the harness layout, schematic and wiring connection points. I cannot read the small print on the Chassis Wire Harness page and need to know if it can be read on the original.

See pic of what I am referring to...

 

[bsmith123]

wires

"My next mystery involves a couple of LW wires on the drivers side under the hood close to the washer pump wires. I ohmed them out but could find no termination point anywhere on the harness. I will be pulling the harness completely apart soon to track down a melted wire and to add several circuits to the harness. I'm sure I will find where they go.[/QUOTE]"

I looked at mine and there are a wires that look kinda but are probably LY and GB that go to the transfer indicator switch

they come off the main harness with the reverse switch lights but reach the washer mount just about

no power and did not read to ground though

 

[rockcod]

My 72 hardtop has 2 lights. 1 on the hardtop and another one on the dash for when the top is removed.

 

[Coolerman]

The old dash lights are neat and really handy. The rotating cover allows you to direct light 360 degrees. You can really increase it's effectiveness buy popping off the cover and putting a piece of aluminum furnace tape inside. It's highly reflective and increases the light output dramatically. It's also possible to put a higher wattage bulb in the socket or even a replacement LED light.

On another note: I modified two of the schematics on the download site.

The file named 1971FJ40(L).tif was fixed to reflect the correct wiring for the dome light. Also corrected the # label for the courtesy light switch. It said 4 before and should have been 49.

The file named 71fj40_wireCleanedM.tif I changed the labels on the lights to reflect their actual function and redrew the Vacuum switched valve circuit to show the ground wire.

Minor changes I know...

 

[apeterson]

I have one of the dash mounted lights I got off a different truck... was there a switch to turn those on and off or what?

 

[JohnnyC]

I have one of the dash mounted lights I got off a different truck... was there a switch to turn those on and off or what?

see post #10...pic on left has the oem pull switch...above the light switch in pic

I have the 'darth vader' helmet light also....very handy...the cover pops off easily to get full light

 

[Poser]

see post #10...pic on left has the oem pull switch...above the light switch in pic

I have the 'darth vader' helmet light also....very handy...the cover pops off easily to get full light

I see the room lamp switch in the picture on the right...

 

[JohnnyC]

I see the room lamp switch in the picture on the right...

wups...my bad...thanks for the correction...I ment to say the pic on right...unless your looking at it with a mirror...then its the left

 

[Living in the Past]

"My next mystery involves a couple of LW wires on the drivers side under the hood close to the washer pump wires. I ohmed them out but could find no termination point anywhere on the harness. I will be pulling the harness completely apart soon to track down a melted wire and to add several circuits to the harness. I'm sure I will find where they go.

"

I looked at mine and there are a wires that look kinda but are probably LY and GB that go to the transfer indicator switch

they come off the main harness with the reverse switch lights but reach the washer mount just about

no power and did not read to ground though[/QUOTE]


Maybe could be old wires for your reverse light switch if you now have a floor shift. With the column shifter there was a switch at the bottom if the steering column just above the steering box. Or it could be something else.

My 72 hardtop has 2 lights. 1 on the hardtop and another one on the dash for when the top is removed.

72-74 seem to have a few odd things. Besides the dash and dome light both hard top and soft top models had footman loops in the rear corner of the top.

Toyota made their hard top and soft top model different until the mid sixties. You would either had channel for the soft top welded on top of the windshield frame or not have one at all. Then they started with the fixed nuts on all models. Same with the top of the tub. You had the fixed nuts for the hard top or hole to install the twists. I think between 72 and 74 Toyota took it a step further. Dash light and wiring for the dome light on both models. Seems the only real different was the soft top got a tailgate and fixed nut in the corners of the dash for the eyebolts for the safety straps in the US market. I'm not even sure that all the 40s got the dash lights during those years Don't recall ever seeing a original FJ40 during that time that didn't have the footman loops. I also read on Mud years ago that it was thought around that time the demand in the US for the FJ40 was so high that FJ40s from other markets were being brought in.

So the three speed was the J30 and the four speeds were either a H41 or H42. Why do I have one that has M42 on the Vin plate