in need a wiring schematic 1989 HR 27sb

[onevw]

I have a 1989 HR aluma-lite motorhome. I need help identifying the wiring bundle over the door.

This is where the tank monitor is and the switches for the water pump and water heater.

Rick

[grizzlyalf]

I couldnt find the wiring diagram for you. Larson electronic mfg was who built the panel. It looks like they are still in business. 261 e imperial hwy fullerton ca, maybe they have a schematic.

[wrvond]

I have a sheet marked "operating instructions". Hopefully you can read it well enough.
I don't have a schematic per se, but I do have a hand drawn pinout of the panel connections. As soon as I can get it drawn out and in some kind of useable format, I'll get it to you.

[wrvond]

Here's the pinout - hope this helps!

Also, the light in the bottom of the monitor panel uses the black and yellow wires.

[onevw]

Originally Posted by wrvond

Here's the pinout - hope this helps!

Also, the light in the bottom of the monitor panel uses the black and yellow wires.

Many thanks for this. I did notice some of the original tank wires were the shielded type wire which could contain two circuit paths.

So I am thinking they only used one shielded wire to the tank to get the signal back to the computer.

rick

[wrvond]

That's what it looks like to me, Rick.