F.A.Q. Below are some general frequently asked questions.
What is your return policy?
What do I do if I have a problem with a product?
Why are your website prices different then on eBay.com or Amazon.com?
Below are some frequently asked questions regarding our 12 volt LED's
What is an LED?
How long do they last?
How do I mount them?
How much current do they draw?
What is their operating voltage?
Will they work with AC voltage?
What are the LED dimensions?
What is an MCD and how many MCD's are the LED's?
Do you sell LED's that work voltage other then 12 volts?
How do I wire them?
How far does the LED protrude above the black mounting clip?
Below are some frequently asked questions regarding our TPS Enhancement Modules.
What does TPSEM stand for?
What is the purpose of the LED on the TPSEM?
What does the TPS do?
Where is my TPS?
Are there any disadvantages to using the TPSEM?
How does the TPSEM work?
Will it work on a vehicle that is equipped with drive by wire?
What is drive by wire?
How do I determine my black wire location A or C?
How do I install the TPSEM?
What is your return policy?
Please note that due to the selling fees accociated with eBay.com and Amazon.com our return policys vary depending on where you made your purschase.
Website Orders ONLY: All returns are subject to a 10% restocking fee, and must be in working, new and unused condition. All returns must be made with in 30 days of purchase. After 30 days no refund will be given. To receive your refund you must first request a RMA number. To request a RMA please email your Name, Shipping Address, Order Date, and Order Number to sales@dav-electronics.com. Any shipment mailed back without a RMA number will be refused and shipped back to the customer at the customer’s expense. Once RMA number is provided you can then mail product(s) to us. Once we receive and verify item, we will issue you a refund within 3 to 5 business days. We will use the following formula to calculate your refund.
Original Purchase Price - Original S/H - 10% = Your Refund
Exchanges: please contact us at: sales@dav-electronics.com for instructions.
Defective items: If you believe an item is defective please email us within 3 days of receiving your item for instructions. Emails regarding defective items must be sent within 3 days of delivery. Otherwise customer waives the right for a return.
Amazon.com Orders ONLY: All returns/exchanges are subject to a 15% restocking fee, and must be in working, new and unused condition. Restocking fee is to cover selling fees which are not refundable to sellers. All returns must be made with in 14 days of delivery. After 14 days no refund will be given. To receive your refund you must first request a RMA number. To request a RMA please email your Name, Shipping Address, Order Date, and Order Number to sales@dav-electronics.com. Any shipment mailed back without a RMA number will be refused and shipped back to the customer at the customer’s expense. Once RMA number is provided you can then mail product(s) to us. Once we receive and verify item, we will issue you a refund within 3 to 5 business days. We will use the following formula to calculate your refund.
Original Purchase Price - Original S/H - 15% = Your Refund
Defective items: If you believe an item is defective please email us within 3 days of receiving your item for instructions. Emails regarding defective items must be sent within 3 days of delivery. Otherwise customer waives the right for a return.
Ebay.com Orders ONLY: Orders: All returns/exchanges are subject to a 20% restocking fee, and must be in working, new and unused condition. Restocking fee is to cover selling fees which are not refundable to sellers. All returns/exchanges must be made with in 14 days of delivery. After 14 days no refund will be given. To receive your refund you must first request a RMA number. To request a RMA please email your Name, Shipping Address, Order Date, and Order Number to sales@dav-electronics.com. Any shipment mailed back without a RMA number will be refused and shipped back to the customer at the customer’s expense. Once RMA number is provided you can then mail product(s) to us. Once we receive and verify item, we will issue you a refund within 3 to 5 business days. We will use the following formula to calculate your refund.
Original Purchase Price - Original S/H - 20% = Your Refund
Defective items: If you believe an item is defective please email us within 3 days of receiving your item for instructions. Emails regarding defective items must be sent within 3 days of delivery. Otherwise customer waives the right for a return.
Once you receive a RMA you can mail your returns to:
DAV Electronics RETURNS
RMA# (ENTER YOUR RMA NUMBER HERE)
PO Box 802
Atco, NJ 08004-0802
PLEASE NOTE RETURNS RECEIVED WITHOUT RMA NUMBER WILL NOT BE ACCEPTED AND WILL BE RETUNED TO THE CUSTOMER AT THE CUSTOMERS EXPENSE.
What do I do if I have a problem with a product?
If you experience a problem with any of our products please discontinue use of product and contact us immediately by email at: sales@dav-electronics.com Please include your name, order date, order number and the problem you are experiencing. We will then contact you with instructions.
Why are your website prices different then on eBay.com or Amazon.com?
Ebay and Amazon charge sellers selling fees that range between 15% and 20% when we sell an item. Since there are no selling fees on our website we are able to pass the savings on to you. Please note that we are unable to price match items found on other sites with our website.
What is an LED?
A light-emitting diode (LED) is a semiconductor device that uses solid-state electronics to create light. An LED light source (or diode) consists of a layer of electron rich material separated by a junction, from a layer of electron deficient material. Both sit on a semiconductor base. Power applied in the junction excites the electrons, which in turn emit photons of light. The color of the light depends on the chemical composition of the layers.
How long do they last?
The expectant usage life of an LED is 100,000 hours of use, or 11 years of continuous use.
How do I mount them?
We currently have three mounting options, black nylon mounting clips, clear mounting caps, and chrome or black plastic mounting bezels.
Black Nylon Mounting Clips:
The black nylon mounting clips can be mounted by drilling a 1/4 inch hole in any material up to 1/8 inch thick. Press the clip into the hole and insert the LED up from behind.
Clear Mounting Caps:
The clear lens caps can be mounted by drilling a 1/4 inch hole in any material up to 1/4 inch thick. Press the cap into the hole and insert the LED up from behind.
Chrome or Black Plastic Mounting Bezels:
The chrome and black plastic mounting bezels can be mounted by drilling a 19/64 inch hole, in any material up to 1/4 inch thick. Then feed the LED's wires through the top of the hole and secure the bezel with the supplied lock washer and nut.
Additional Mounting Option:
We have had customers report use of glues and epoxies to mount our LED's.
How much current do they draw?
The typical DC forward current draw is 0.02 amps
What is their operating voltage?
Our LED's are designed to operate at their optimal brightness with a positive DC voltage between 12 and 14 volts.
Will they work with AC voltage?
Our LED's will work with AC voltage, however they will be substantially dimmer than they would be if using DC voltage. Using AC voltage is not recommended.
What are the LED dimensions?
All dimensions are in inches. Bulb is has a diameter of .193in. and has a height of .350in. With clip the total height is .389in
What is an MCD and How many MCD's are the LED's?
MCD (short for millicandelas) is a measure of the light output of an LED. The higher the MCD rating, the brighter the LED. Our LED's operate between 3000 MCD (typical) and 4000 MCD (max). The only exception is our Blue, Ocean Green, White, Pure Green, and Red/Orange LED's that have a rating of 4000 MCD (typical) and 5000 MCD (max). Additionally, our Purple/UV LED's are measured in Ultraviolet output which does not reflect the visible light output. Thus, the Purple/UV LED's appear to be less bright than our other eleven colors.
Do you sell LED's that work voltage other then 12 volts?
We can modify our LED's to work with almost any DC voltage. Please email us at sales@dav-electronics.com with your voltage requirements.
How do I wire them?
Wiring our LED's is simple. Just hook the black wire to any ground wire or chassis ground. Then wire the red wire to any 12 volt source. Please note that if you wire the red wire to a constant 12 volt source, the LED will be constantly on.
How far does the LED protrude above the black mounting clip?
The lens of the LED protrudes 0.135 inches above the black nylon mounting clip.
What Does TPSEM stand for?
TPSEM is short for Throttle Positioning Sensor Enhancement Module.
What is the purpose of the LED on the TPSEM?
According to our research, consumers wanted a feature that showed
them when the TPSEM was working. Our response to this was to install
an LED on the TPSEM that illuminates when the TPSEM is engaged. Please note that the LED comes mounted on the TPSEM. It is only visible under the hood, not from inside the vehicle.
What does the TPS do?
The TPS or throttle positioning sensor is a devise that has a lever connected to the throttle plates of your throttle body. The TPS outputs different voltage as the lever changes position. This allows the vehicles computer to determine the position of the throttle plates.
Where is my TPS?
The vehicle's TPS is usually located on the throttle body of the vehicle. Please consult a manual for your vehicles TPS location.
Are there any disadvantages to using the TPSEM?
The only disadvantage to using the TPSEM is that when it is active it puts your vehicle into the open loop mode of operation with will result in slightly increased emissions as the oxygen sensors are being ignored.
How does the TPSEM work?
Below is an explanation of what happens when our TPS Enhancement Module is active.
The PCM uses the TPS output voltage to determine whether the driver is pushing down on the accelerator or releasing it. During hard accelerations, the PCM will increase fuel delivery to prevent hesitation. During hard deceleration, the PCM can cut fuel delivery completely.
There are two basic run-mode conditions open and closed loop. In closed loop operation, the PCM monitors the precatalytic converter oxygen sensors to adjust the fuel delivery to maintain a part-throttle air/fuel ratio very close to 14.7:1. Closed loop operation provides the best gas mileage and the lowest exhaust emissions. But this is also the least effective for producing horsepower and torque.
Open loop operation occurs when the engine is first started, or when the throttle is in the WOT position. In open loop, the oxygen sensors are ignored and the air/fuel ration is calculated by the PCM based on inputs from the engine coolant sensor, the mass air flow sensor, the manifold absolute pressure sensor, and the TPS.
When the throttle is in the WOT position, the PCM enters open loop operation and typically tries to maintain an air/fuel ration of about 12:1. This open loop mode is what is achieved when the TPS Enhancement Module is activated. The TPS Enhancement Modules purpose is to put the vehicle in to the open loop mode sooner which allows the engine to make more horsepower and torque.
Will it work on a vehicle that is equipped with drive by wire?
No, our TPSEM can not be used on vehicles equipped with drive by wire.
What is drive by wire?
Drive By Wire is used in some GEN II 3.8L V6 engines and some later model 5.7L V8 engines. Drive by wire refers to the fact that these engines have no throttle cable from the pedal to the throttle body. Instead they are electronically controlled by a sensor in the gas pedal that sends a signal via a wire to a motor that actually actuates the throttle plates to correspond to the amount the driver is depressing the gas pedal.
To determine If your vehicle is drive by wire, look to verify that you have a throttle cable attached to the throttle body. This can further be verified by manually advancing the throttle and seeing if the gas pedal moves if it does then you do not have drive by wire. If you are uncertain please consult a service manual for your vehicle.
How do I determine my black wire location A or C?
Depending on your engine and year of your vehicle your black wire (ground location) will be either in the A or C location. Use the picture below and orentate your TPS plug to determine the location of the black wire.
How do I install the TPSEM?
The TPSEM installs inline with your TPS. To install your TPSEM unplug the connector from the TPS. Then connect that plug into the female plug on the TPESM. Then connect the male plug of the TPSEM into the TPS of your vehicle.