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The Voice of Reason
1,481 Posts
Discussion Starter · #1 ·
LIDATEK LE-30 Laser Echo installation WITH PICTURES

Lidatek recently began shipping the LE-30 with an increase in the sensitivity over the LE-20 (it's also more selective so as not to false alarm on LED based brake lights as found on some GM products), simpler wiring install thanks to a new plug-in interface module and dual purpose LED which now shows system status (system ready and alarm). The transponder is also physically shorter aiding in an installation location with limited depth.

The LIDAR gun works by timing the reflection of its laser pulse and calculating the distance to the target car from that round-trip time. It then calculates average speed over a pre-determined number of pulses.
According to LE-20 patents, Lidatek sends a constant-rate high-frequency (2Mhz) pulse train when a LIDAR gun is detected,
thus drowning out the reflection of gun's pulses off your car and preventing it from calculating the distance (and therefore your speed).

For more information see the January 97 issue of BMW Roundel magazine, pg. 44. and Audiworld


LIDATEK Transponder (about the size of a matchbook.)

I’ve also completed hardwiring my V-1 and mounted both the LIDATEK’s LED and the V-1 hidden display in the space in the console formerly occupied by the fuzzy red coin tray that we in the “Correct” USA get in place of an ashtray. At most this requires sacrifice of the coin holder or ashtray, well worth it IMO. I have EZ Pass, anyway.

Standard dIsclaimer: This is how I did it, I don’t know if your skill level is greater or less than mine, so I don’t necessarily recommend that you attempt this. So if you try this and break something or blow anything up or maim kill or disfigure yourself you’re on your own! has instructions online for both the Fog Light install (removing the bumper) and the Cassette Player (removing the console, etc.).


Thin-blade putty knives
Dremel Moto-Tool
Helms TSX Service Manual (HIGHLY recommended)


Lidatek LE-30 kit
3M wire taps
HD Velcro pads
Cable ties
Corregated electrical conduit (Radio Shack or Home Depot)

Electrical Tape
Duct Tape
Masking tape
Plastic Sheet Stock (Hobby store)
Aluminum Sheet Stock (Hobby store)
Switches (Radio Shack)
Acura firewall grommet
Black interior trim paint

2. Remove battery
3. Remove front bumper
4. Remove glovebox stops.
5. Disconnect glove box damper.
6. Disconnect wires, screws and remove glovebox.
7. Remove screw and pop off side cover of console in passenger’s footwell.
8. CAREFULLY remove console storage box (pulls out), Don’t pull on lid.
9. Unscrew shift knob.
10. CAREFULLY remove console top (pulls up)
11. Disconnect seat heater switches.
12. Remove 4 Phillips screws from coin pocket holder assembly.
13. Disconnect power socket connector. Remove Coin Pocket Holder.
14. Remove the lower dash panels.
15. Pop red felt coin holder out of assembly.
16. Using Dremel, cut out entire back of coin pocket holder.
17. Now is also a good time to cut a cardboard template for the plastic piece to fill the tray. (You may wish to cover the wires visible behind the concealed display.)
18. Fabricate a plastic plug and aluminum bracket to mount the V-1, LE-30 status diode and kill switches for the “Not An Ashtray” holder, and paint it using black interior trim paint.

19. Unwrap electrical tape from power socket wire. Press 3M wire taps into (+) and (-) wires. Insert spade connectors into wire taps, wrap everything in electrical tape.
20. I used the supplied L bracket and mounted it to the bumper immediately to the left (driver’s) side of the license plate in the air intake. Mark where you need to drill. Drill mounting holes into plastic bumper, pull longer metric screws or bolts (Home Depot) through. Use supplied perforated mounting brackets to back up screws-bolts.
21. Mount the mating L bracket to the transponder with the back and right edges flush. The supplied 3M double-sided tape is super strong--don't use it until you're certain of the alignment. Screw the two L brackets together with the supplied screw and lock washer. For an extra margin of safety, I used Loctite on all the screws.
22. Fit the corregated conduit around the cable and thread the cable behind the left headlight and in front of the battery. Leave the DIN plug unattached for now.
23. Pull out the plug in the firewall, cut a slit in the plug, pull the second DIN cable through the slit. Fish through the firewall, I found it easiest to fish to the right (driver’s) side, the fish comes out under the gas pedal, and then fish to the other side under the glovebox.


24. Run the second cable, in corregated conduit under the battery the along the existing wiring harness, up and to the firewall. Pull it through using the fish.

25. Seal the cable to the grommet using silicone seal. Secure the cable with the cable ties and connect the DIN connector.
26. With double-sided tape, mount the LIDTEK warning speaker on a flat surface under the dashboard.
27. Plut together. Stuff the connectors, taped toggle switch, fuse and excess wiring into the console and under the carpet.
28. I mounted the kill-power switches with the Lidatek LED in the “Not An Ashtray” fabricated plastic insert along with the V-1 remote display.
29. Attach HD Velcro to V-1 Concealed Display and coin tray assembly.
30. Replace 4 Phillips head screws for coin pocket holder assembly.

Next, as they say in the Haynes manuals “Reassembly is (simply!) the reverse of disassembly”!



“Not An Ashtray”! (With Valentine-1 remote display.)

Power switch

Lidatek LED

Now you see it...

"Huh? Officer? My car wouldn't register on your laser gun????"

LE-20 diagram (the LE-30 only needs one transponder) but the general idea is the same.

The Voice of Reason
1,481 Posts
Discussion Starter · #4 ·
MemRheins said:
How fast do you Drive Man?
"If you drive fast, or you drive a lot, or you drive fast a lot, you NEED a radar detector!"

I need to drive a lot since, post-September 11, my NYC based co. moved it's actual back office ops out near that mountain in PA where VP Cheney hides.

But to answer your question: "I'm almost NEVER the fastest car on the road". I'm usually about 1/8 mile behind the fastest car on the road. (Preferably, behind a bright-colored BMW or Porsche or Corvette. :D )

And I'm convinced that driving a lot without Electronic Countermeasures is like playing Russian Roulette with a loaded gun.

Ask the truckers what they run. (I'll answer this for you: a minimum of a radar detector, police scanner and CB. Not a Laser jammer since they have too much frontal area. But they would, if they could.)

Reason for posting today is that I just returned from a 1400 mile vacation trip and I did get hit by Laser by an absolutely-impossible-to-see New Hampster motorcycle cop on I-93. The Dodge Neon driving near me at the same speed got pulled over. I didn't. So maybe this thing works!

549 Posts
Yes.... cops can use FOUR different types of speed decetion...

Two major systems:

Radar and Laser

In radar there are three sub categories, X band (commonly used with automatic doors like CVS/Walgreens etc), K Band, and KA band (Ka is ALWAYS cop)

Laser is simply laser... laser gets your speed INSTANTLY... radar does not... if you are hit with laser, its all over... you have no hope... check out you can see laser jammers (which i just bought, but have not installed yet)...there is much talk about these laser they work or not? some say yes, some say no... nobody really knows i guess.....

If you want a radar/laser detector, I suggest getting the valentine 1....

I sold mine.. to get a hidden system, but it was I bought another valentine...

The laser jammer (link above) is the passport ZR3...and there are three sensors... two in the front grills...and on on your rear license plate.

Hope this helped a little:)

116 Posts
DAMN, thats really cool. how much did all that anti-radar/laser equipment run you?
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