2004 Lexus RX330 Remote start Install

Planning on installing a Avital 4103LX Remote start with keyless. Using idatalink ALCA for the bypass. Been looking over the forums. few things I cant find a clear answer on.

1. How to shut off the auto headlights after remote start shut down

2. How to wire the second starter wire, some say use a relay, some say you don't need one.

Any updated diagrams or tips would be great.

Thanks as always for the help guys.

I'll answer no.2 for you ALWAYS use a relay, there's a reason for a car to have two starter wires, emulate the OEM wiring dangerous otherwise.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

I don't see an answer on the ALCA diagram for the autolight question. The Directed DBALL show a wired connection for this. I have used it on a couple of Toyota Camrys.

Yes. I would use a relay off the 4 pin Satellite Harness, Pin 3, Purple, (-) starter output

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Ya beat me Howie

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When all else fails, Read the Instructions
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Thanks guys. I thought I seen something somewhere about using a door pin input to shut off the auto lamps? any ideas on that?

What you are looking for is a R/S output that will pulse after a R/S shutdown only.  This wire would be connected to the
RX330's Door Trigger wire to turn off the Auto-Headlights.  The 4103's Rearm Output will pulse after a shutdown and a
door lock command.  Your RX330 has a factory alarm that, if armed might get upset if you press Lock on the 4103's
remote because besides re-locking the doors it would also pulse the door trigger wire.

A R/S unit like the Prestige APS57E has a "Pulse after shutdown" output wire.   The Compustar CS800-s has a
programming option to do this.  Both are better units than the Avital 4103LX, IMHO, due to their outputs and programming
options.

Another way would be to add a relay to the 4103, controlled by the 2nd Status Output wire that would open the RX330's
Auto Headlight wire during a remote start and run time.  Typically,  this wire is a (-) output and located next to the (-)
Parking Light wire at the Headlight Switch Plug.  Can't find a wire guide listing for this wire but it should be
easy enough to locate, test and verify.

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Soldering is fun!

Directed DBALL list the Autolight wire as: Pin 12, Brown at headlight switch.

I know a lot of people on this site have issues with the DBALL. I have used them quite often over the years with no issues. Maybe I've been lucky.
As I stated earlier, I used them recently on two 09 camry's with autolights, wired up as shown and have had no issues with the auto lights turning off. Just my two cents.

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thanks guys for all the info. Kreg would you happen to have a diagram or pin out for wiring up the relay to shut off the headlights using the 2nd status output?

Also, when using the relay for the second starter I was going to use this from another thread..

Use the H2 neg starter output to energise a relay thus H2 to 85, fused 20amp constant to 86 and 87, 30 to second starter.
Diode 1N4004 across 86 and 85, band to 86


I don't see a Neg starter output on the unit I have. Any ideas?

5 pin automotive Bosch/Tycho relay.
2nd. status output to 85
Cut headlight wire.
Headlight switch side to 87a.
Headlight output side to 30
12V+ constant fused to 86
87 is unused.
Diode 1N4004 across relay terminals, band side to 86.


-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Your previous question NEG starter output, 4 pin satellite harness, thin purple wire.

-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

So for the headlights, the diode would g between 86 to 85?

Yes exactly as the other relay, band to 86.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Thanks again for all your help Howie. I really appreciate it