brake reservoir sensor /switch wiring (1 Viewer)

[Randy88FJ62]

This is a cross post from the 60's section. Thoght I would try here since someone might have the FSM for a 1995 T100:

Swapping a 1995 T100 master cylinder into my 1988 FJ62 Landcruiser. I would like to know what these two wires go to and what sensor or switch is inside and what it does. Anyone have the answer or a link to the wiring schematic?

Does this connector replace the top style floater found in the FJ62 stock master cylinder reservoir?

Thanks.

 

[Jukelemon]

I would think that if your 60 had a sensor to indicate low fluid, that this sensor would do the same.

In other words, either one serves as an On/Off type sensor and sends a signal back to either light the indicator light or not.

I doubt that there is a voltage issue since the indicator light is more than likely just an open or closed circuit indication of the sensor.

But that is just a guess.

 

[raydouble]

The sensor is an on off switch for the dash "brake" light, it has battery voltage at one wire and grounds through the other.

I looked through the FSM here and couldn't find the wire colors and weather they were power or ground. Maybe you can have better luck.

If you turn on the start the vehicle and test each wire at the connector, you should be able to figure which wires to splice together.

 

[Randy88FJ62]

The sensor is an on off switch for the dash "brake" light, it has battery voltage at one wire and grounds through the other.

I looked through the FSM here and couldn't find the wire colors and weather they were power or ground. Maybe you can have better luck.

If you turn on the start the vehicle and test each wire at the connector, you should be able to figure which wires to splice together.

Raydouble,
Thanks for the link. I went through the FSM for the 1996 T100 and there is no wiring schematic in there...
I checked the brake fluid level sensor and it's a float type. There is no mention of a switch in the side of the reservoir.

Does anyone know if there is a difference in the switch type between the 1995 and the 1996 T100? In other words; is the brake fluid level sensor on the side, in the cap, or both?

 

[Jukelemon]

Hi.

I guess I am confused as to why you care what type of switch it is.

If the function is the same i.e. circuit termination that indicates a light, then why does it matter if it is a light sensor, mechanical sensor or any other type sensor?

If the function is to terminate the circuit, then it should work in your 60.

 

[raydouble]

The switch on the inside of the reservior is the newer version of the cap switch, same function.

 

[96r50]

The switch on the inside of the reservior is the newer version of the cap switch, same function.

X2. The 80s had both versions of the switch over the years.

 

[Randy88FJ62]

Thank you both for confirming this. The install of the new master cylinder and booster (diphram) should go pretty smoothly. I read up on bench bleeding the unit and the toughest part looks like not spilling everywhere when attaching the lines after bleeding it.

$40 for a newer upgraded master cylinder makes me happy.

 

[EastCanFJ62]

I need one of those female connectors that fit into the side of the ms, anyone have one?

 

[Randy88FJ62]

I may have the old one off my original MC in the garage. I can check tonight. The other option would be a parts yard.

 

[EastCanFJ62]

Thanks! but I went to the parts yard on the way home and we dug one off a Tacoma...nice thing about it was the price.....free! Thanks for looking...cheers!