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Old 11-18-2008, 10:05 PM   #7
xxxJohnBoyxxx
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Join Date: Dec 2007
Location: Gulfport, Florida
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Default Air Pump Simulator DIY

DIY Secondary Air Pump Simulator.

Secondary Air Pump Parts Needed (All Purchased @ Radio Shack):

1 - Component PC board (#276-149 $1.99)
1 - Component Project Enclosure (#270-1802 $2.69)
1 - SPDT * PC relay miniature 12vdc 10V (#275-248 $4.69)
1 – 5V Voltage regulator (# 276-1770 $1.59)
1 - 100K – ohm Micro Potentiometer (#271-284 $1.49)

Tools Needed:

Soldering pen 7 watts or higher
Solder
Wire
Digital volt meter


Place relay, potentiometer and regulator on board as shown in picture. Solder all pins on back side of board. Go to wiring diagram and make connections. When finished test unit by hooking to 12 volts and set potentiometer with a screwdriver to 200mv from pin DME wire to ground. Potentiometer should be between 45,000 and 50,000 ohms if you want to ohm it out. Questions to jsmith50@tampabay.rr.com

***This is for off road use only***
***I accept no responsibility for items burned out or damaged by mis-use of this devise. The DME & O2 are sensitive devises and can be destroyed by sending the wrong voltage to the units***

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Wiring


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