hask

Hello,

I need help in changing the orginal headunit to after market. below is the harness in the OEM setero



I think its different than what I saw in Ebay, could any one please guide me to the correct harness?

There are two harness (clips), why only I need to use one, what about the second one?

I want to remove the orginal amp and put after market, so I need to disconnect the OEM amp if any one can help me in that.

Thank you very much!

Shibumi1

need more info yr of the ES300 which model radio is it? any stereo shop can rewire the car.. its easiest to run wires to the oem amp and bypass it.. all you'll need at the headunit is constant power,ign ground and ant power out... maybe illumination but its not a deal breaker..

hask

My ES is 1999 ES300
it has orginal subwoofer & changer ... what else should disconnect from the OEM amp other than speakers wires? because I need only the front speakers, I will mount new speakers in the rear.

Thanks

Shibumi1

the harness u need is a metra 70-8112 it will give you all u need to turn on the radio.. then at the amp rear the front speaker wires can be found with a 9volt battery take a speaker wire and connect one lead to positive the other to negative.. with the remaining ends probe the (unplugged) amp harness.. (remember not to probe the heavier gauge wires as they will be power an ground for the amp.. as u probe take the negative speaker lead and leave it in one pin while u probe with the other when a pair of speaker wires are found the speaker will "pop" in an out so you can hear which speaker is located..toyota typically has all positives on 1 side an negatives directly across on the other side... hope this helps

hask

Thanks, but what about the sub antenna how could I use it while I have only for the main in the after market head unit?

hask

Thanks, the OEM head unit is Pioneer for ES300, most Lexus in this generation are same, here photo for both, main and sub antenna:



The problem here there is no Alpine dealer, but as I understand is that I should find a plug for both?