I own a 2000 RX300 and I have a problem. I have review all RX300 posts but I was not able to find the answer to my problem.

I purchased the Altezza LED taillight assy from the Ebay (X-3 racing) and replace them.

The taillight assy was working during installation.
After one day, all taillights are out including the break light, license plate light, and rear side markers. However, the taillight out dash indicator was off.

The x-mission shift is locked since break light is not working.

Anyway, I found the blown tail light fuse so I changed it.
The new fuse was blown as soon as I turned the light on.

I decided to troubleshoot the problem.
I changed the LED to original taillights and then turned it on.

The license plate light and the side markers were on but no taillight was on including the break light.

I put in another fuse.

I unplugged one of the light sockets and the tail light out indicator in the dash came on.

The taillight out indicator in the dash is off as soon as I plug in one of the light sockets.
The fuse is still good.

I am thinking something shorted out between fuse to the lights.

What else can I troubleshoot?

Any ideas?

I would like to get some idea before I take it to the dealer.

 

I would contact the seller and tell them you have a defective set. The final proof would be to plug the old lights in and confirm that the fuse does not blow. If it does blow, then the wire harness to the lights might have rubbed through to the chassis somewhere, probably near the lights.

 

i was reading about that somewhere forgot where .. i think the guy use a lower watt fuse or a higher watt fuse and it solve the problem .. i forgot which one was it ..

 

Actually, I inserted 15 amp Fuse and it blew.
However, 20 Am fuse did not blow.

The problems is still no tail lights are on.

 

Always use the exact same fuse. Using a higher amp (not watt) rating fuse will cause the wires to melt, or even to catch on fire.

My bet is simply that the third-party LED tail-lights are not made to factory power spec and are drawing too much power.

 

OK.
Still, I am still puzzled why the taillights do not work when I reinstalled the OEM taillights.
I guess I am not asking the right question.

What is between the light socket to the fuse box?

 

some 1 in the dealer told me that these led tails blow the factory harness,they told me that u must use a relay.im interested in these lights but not if there gonna blow my tails.