When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
for my winter project i got a pair of jbl gx302's front and jbl gx602's rear with harness kit metra 72-4568 for a plug and play for the rear. watched a install for the rear and they used the harness kit for the rear but they did not show the install for the front. had the door panel off a few months ago to fix the floppy door mirror and the tweeter looked very easy to replace. i remember reading something about the polarity needs to be reversed for the front. i think i can handle that with a little coaching from the in the know forum members. i can solder and weld and crimp terminals. am i looking real close at a plug and play? thanks in advance Denny
Yes, it is very important to make sure the new speakers are in phase with each other, and more importantly, in phase with the door subwoofers. Otherwise, you might experience sound cancellation, resulting in tinny sound and lack of presence.
Using the above mentioned adapter harness to install new rear speakers should take care of this for you, however, the factory connectors for the "front" OEM Bose 3½" twiddlers are "spade" ones and they do follow Bose's standard, which is the opposite of what aftermarket manufacturers use.
To properly connect your new front speakers, you will need to cut the factory spade connectors and crimp new ones following the "normal" standard (reversed in relation to Bose), or create your own adapter harnesses if you don't want to cut and crimp the front OEM wires
Take a look at this Post for more details and tips on how to proceed.
thanks for the reply GCG. just took the speaker covers off the rear. rears should be here Sunday. i'll probably make a small harness for the fronts.looks like bose pos should go to jbl neg and bose neg should go to jbl pos. thanks again.
A little trick we used back when I dabbled with car audio to verify polarity is to use a AAA battery with leads off of it. If you connect + to + between the speaker and the battery than the speaker cone should come out. If the polarity is backwards the cone will retract.
This may help to verify your wiring.
A little trick we used back when I dabbled with car audio to verify polarity is to use a AAA battery with leads off of it. If you connect + to + between the speaker and the battery than the speaker cone should come out. If the polarity is backwards the cone will retract.
This may help to verify your wiring.
although i'm not a stereo guy i did that trick a couple times back in the sixty's. didn't know if that trick was still good today. thank you very much for the refresher course.