Power Wire Through A Firewall

[kazools400]

I put a subwoofer in my trunk this week end and found a good place to wire the power through the firewall without drilling a hole. There's a rubber boot on the passenger (USA) side of the engine compartment that feeds most of the engine sensor wires through the firewall to the ECM under the glove box. I unbolted the rubber boot (10 MM deep socket) and took the glove box out. I feed the wire, taped to a straitened out coat hanger through from the glove box side out to the engine compartment.

[kazools400]

Another pic.

[kazools400]

And one more.

[kingkong5]

That is pretty cool! Since I haven't wired a sub in the trunk before, how do you get this power cable that's now in your glovebox, all the way back to the trunk?

[kazools400]

I also cut the boot in two places to feed through it so I could bolt the boot back on. After the boot was bolted back on I used some rubber marine calk to seal the hole in the boot where the wire comes through.

[kazools400]

That is pretty cool! Since I haven't wired a sub in the trunk before, how do you get this power cable that's now in your glovebox, all the way back to the trunk?

Thanks - there a couple of ways to get the cable back to the trunk. Under the carpet or through/under the door trim pieces. Then take out the back seat and there are two covers that you can take out that lead to the trunk just over the gas tank.

[lansal15]

hey kazools400,

What steps would I have to take to connect my amp to the stock head unit of my 91 ls400? I want to connect it to my subs. Its a Pioneer deck. I just dont know how to get the signal to the amp.

Thanks,

Lance

[silvermate]

great thanks for the pics and write up

a mod or mngment needs to put this in the work shop tutorials.....

[kazools400]

lansal15

I don't know, I had to replace my head unit because I was messing around trying to splice into the cd changer wires for an iPod input. Fried it and now I have a sony stereo.

[Travieso~13]

hey kazools400,

What steps would I have to take to connect my amp to the stock head unit of my 91 ls400? I want to connect it to my subs. Its a Pioneer deck. I just dont know how to get the signal to the amp.

Thanks,

Lance

←

Your best bet if you want to do that is try going to Best Buy(or similar) or a Audio shop or something. They sell wire harnesses that let you connect amps to your stock audio. I think its some kind of modulador...it should be anywhere from $20-$40. My brother did that on his '01 Tahoe. Hope this helps

Travieso~13

[91ls400]

It's an old post but I was just trying to run a wire today and i couldnt get my glovebox off at all! I got the 5 clip like button things. I disconnected the door supports, and i got the lower 2 clips out... what else do i have to do??