Juergensen Marine

Actual Size

The Juergensen Marine Heads Up Display!

Sensor One (S1)

If you are using 3 separate sensors, this is where you would connect the Positive Wire (+) from Sensor #1.

Sensor Two (S2)

See Above

Sensor Three (S3)

See Above

Sensor Common (SC)

Here is where you would connect ALL THREE of the Negative leads (-) from the Oxygen Sensors. If you are using more than one sensor, you should connect all three to a single wire at the point where you are attaching the sensors to the cable that will run to this electronic board. We do not recommend that you try to cram three separate wires into this one spot. It is not necessary, since sharing a common wire does not affect the sensors in any way.

Push Button (PB)

The Push Button is used ONLY for calibrating the HUD. You can use any kind of device which will close a contact when activated. Meaning, you can use a regular push-button, a momentary switch, or a magnetic switch. If you want to keep the unit completely water tight, the easiest method to use would be a Magnetic Reed Switch. That way, you can seal the whole unit in some epoxy or liquid rubber compound (like Plasti-Dip) and simply use a magnet to activate the switch for calibration. Only ONE LEAD from the switch goes to the PB position on the HUD board. The other should be connected to the V- part of the board, or the Negative Lead of the Battery. (See Drawing)

Negative Voltage (V-)

Connect the Negative lead from the Battery to this post. Remember that in addition to the Negative Lead, you will also have to connect one wire from the Push Button Switch, and one wire from the center lead of the LED to this post.

Positive Voltage (V+)

Connect the Positive lead from the Battery to this post. If you decide to use the enclosed switch for turning the unit on and off, you should connect that switch in line with the Positive lead. (See Drawing).

LED Green (LG)

Connect the Green lead from your Tri-Color LED to this post.

LED Red (LR)

Connect the Red lead from your Tri-Color LED to this post.

TAKE A LOOK AT THE SCHEMATIC DRAWING OF HOW TO HOOK ALL THIS UP!!

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