Hey All,
Not sure if this might be helpful, but thought I post up what I went thru.
Likewise, all information here is provided AT YOUR OWN RISK because of the sake that I don't know everything...just sharing what I DO know.
I've been in the search of finding the factory 1998 Camry factory keyless entry. My 1998 LE V6 Anniversary edition did not come with the keyless entry installed. the Previous owner had an aftermarket one installed that didn't work that great and the remotes worked randomly at best.
With my OCD on trying to keep it as stock looking as possible, I set on an adventure that no one (I think) has tried on here. Install the RS3000 into a 1998 Camry.
I found someone selling the entire harness including the ECU and switch from a 1998 Camry I4 LE J-Vin. It was a dealer (not factory) installed one. I manage to picked it up, but I was having issues trying to figure out where the heck it wired into the factory connector and tap. Figuring the remotes for the RS3000 was also more hard to find and did not look the same as my other RS3200 system (I have a 2004 SE and XLE w/ the factory fobs, wanted to look the same...), I did a bunch of research if I could incorporate the 1998 Camry to use the RS3200 instead of the RS3000 which I believe was the original option for 1998.
Either RS3000 or the RS3200 had a 'SECURITY' light next to the rhetostat in the Camry.

From what I gathered
-The Camry Gen4 used the RS3000 system from 1997-1999. LE/CE trim had optioned to have it dealer installed if the client wanted it installed. Otherwise, it could come from the factory. XLE trim had some kind (not sure if it was the same RS3000) installed w/ engine immobilizer chip.
-The Gen4.5 (2000-2001) had the same option as the earlier years. Here's what it got confusing. I was under the impression that if you had the 'TOYOTA SECURITY' light, you had dealer installed and went with a different remote. I found two supposedly 'dealer install' with two different remote styles. See Below for comparison of the remotes that came with either the factory or dealer installed systems.
I'm also under the impression that a Camry could have just the factory keyless entry install without the alarm (so not the RS3200) but they will use the RS3200 remotes (without LED) as well.
RS3000 (Camry, Corolla AFAIK)

RS3200

OR

The one with the LED I found the FCC number starting with BAB237131-056
The one without the LED I found the FCC number starting with GQ43VT14T
THESE REMOTES LOOK ALIKE EXCEPT FOR A SLIGHTLY DIFFERENT THICKNESS ON THE REMOTE BODY AND THE LED LIGHT ON IT!
For what it is worth, my 2004 XLE V6 J-Vin w/ engine immobilizer factory installed keyless entry, 2004 SE I4 5SPD MANUAL J-Vin w/o engine immobilizer + ALARM w/ RS3200 kit that was 'factory' installed has the GQ43VT14T. My mom 2001 LE I4 auto w/o engine immoblizer w/ factory keyless entry also uses the same remote.
The different is the LED light on the remote and the FCC number.
Some must read information here on the RS3200 and the RS3200+
http://www.newcelica.org/forums/showthread.php?t=341283
Anyhow.....
Long story short, after failing on installing RS3000 harness into my 1998, I had found a 2001 Camry LE V6 w/ the RS3200+ 'dealer' installed due to the SECURITY light visible. There is a difference between the RS3200+ and the RS3200 (and the RS3000). After ripping out the entire harness, I found that it was not plug and play in my 1998 Camry. One of the major connector did not fit. It was the major one (I believe) going into the fuse(BCM??) box.
From what I gathered, if this connector is the same color as your car, you should be fine. If not, it won't work.
Next post will compare with pictures of the RS3000, RS3200, and the RS3200+
Not sure if this might be helpful, but thought I post up what I went thru.
Likewise, all information here is provided AT YOUR OWN RISK because of the sake that I don't know everything...just sharing what I DO know.
I've been in the search of finding the factory 1998 Camry factory keyless entry. My 1998 LE V6 Anniversary edition did not come with the keyless entry installed. the Previous owner had an aftermarket one installed that didn't work that great and the remotes worked randomly at best.
With my OCD on trying to keep it as stock looking as possible, I set on an adventure that no one (I think) has tried on here. Install the RS3000 into a 1998 Camry.
I found someone selling the entire harness including the ECU and switch from a 1998 Camry I4 LE J-Vin. It was a dealer (not factory) installed one. I manage to picked it up, but I was having issues trying to figure out where the heck it wired into the factory connector and tap. Figuring the remotes for the RS3000 was also more hard to find and did not look the same as my other RS3200 system (I have a 2004 SE and XLE w/ the factory fobs, wanted to look the same...), I did a bunch of research if I could incorporate the 1998 Camry to use the RS3200 instead of the RS3000 which I believe was the original option for 1998.
Either RS3000 or the RS3200 had a 'SECURITY' light next to the rhetostat in the Camry.

From what I gathered
-The Camry Gen4 used the RS3000 system from 1997-1999. LE/CE trim had optioned to have it dealer installed if the client wanted it installed. Otherwise, it could come from the factory. XLE trim had some kind (not sure if it was the same RS3000) installed w/ engine immobilizer chip.
-The Gen4.5 (2000-2001) had the same option as the earlier years. Here's what it got confusing. I was under the impression that if you had the 'TOYOTA SECURITY' light, you had dealer installed and went with a different remote. I found two supposedly 'dealer install' with two different remote styles. See Below for comparison of the remotes that came with either the factory or dealer installed systems.
I'm also under the impression that a Camry could have just the factory keyless entry install without the alarm (so not the RS3200) but they will use the RS3200 remotes (without LED) as well.
RS3000 (Camry, Corolla AFAIK)

RS3200

OR

The one with the LED I found the FCC number starting with BAB237131-056
The one without the LED I found the FCC number starting with GQ43VT14T
THESE REMOTES LOOK ALIKE EXCEPT FOR A SLIGHTLY DIFFERENT THICKNESS ON THE REMOTE BODY AND THE LED LIGHT ON IT!
For what it is worth, my 2004 XLE V6 J-Vin w/ engine immobilizer factory installed keyless entry, 2004 SE I4 5SPD MANUAL J-Vin w/o engine immobilizer + ALARM w/ RS3200 kit that was 'factory' installed has the GQ43VT14T. My mom 2001 LE I4 auto w/o engine immoblizer w/ factory keyless entry also uses the same remote.
The different is the LED light on the remote and the FCC number.
Some must read information here on the RS3200 and the RS3200+
http://www.newcelica.org/forums/showthread.php?t=341283
Anyhow.....
Long story short, after failing on installing RS3000 harness into my 1998, I had found a 2001 Camry LE V6 w/ the RS3200+ 'dealer' installed due to the SECURITY light visible. There is a difference between the RS3200+ and the RS3200 (and the RS3000). After ripping out the entire harness, I found that it was not plug and play in my 1998 Camry. One of the major connector did not fit. It was the major one (I believe) going into the fuse(BCM??) box.
From what I gathered, if this connector is the same color as your car, you should be fine. If not, it won't work.
Next post will compare with pictures of the RS3000, RS3200, and the RS3200+