kloker
NAXJA Forum User
- Location
- Austin, Texas
Has anyone noticed this? Well, I have. Here are the details. I just picked up a new head unit for my '97 XJ Sport, which came with the stock four-speaker system, front 5.25s in the doors and in the soundbar molded into the rear headliner. The new unit is a Pioneer DEH-7800MP. Fry's lowered the price about a hundred bucks on it, and I like the 6800, which I have in my Civic, so I thought I'd step up a notch for almost the same price. I picked up a Metra mount kit (99-6501) and harness plugs (Metra 70-1817) there also. I got home and started looking at the similar plug set I pulled out with the old crapola unit, and it seemed like it was wired wierd compared to the info on the Metra package. But the kid I bought the XJ from wired it, and did say he didn't do it right. But it did have sound coming from it, so I hope the speakers are okay, so I can run 'em for a while till I can get the amps and new speakers. I'll be using MB Quart 6.5" components, haven't decided on the amps yet. Anyway to make a long story, well, a little less long, I started looking on here for links to wiring diagrams.
To start with, my FSM color coding does not match what's in my harness. Some wires are the same but some are not. And in some cases neither do any of the other diagrams I found show the same. But I noticed this: The Metra plugs show speaker polarity the same as the FSM, but the wiring diagrams at the links for Install Dr. (http://www.installdr.com/Harnesses/DCP-Wiring.pdf) and Jeep Stuff (http://snowboard247.blogspot.com/2005/05/1984-01-jeep-cherokee-xj-wiring-info.html) I found here reverse the speaker polarity! The info in those two actually switch the positive and negative leads for at least three speakers, compared to the other diagrams (Metra and FSM). You can compare them for yourself. WTF? So which is right? I guess I'm about to find out, when I install the unit today. I'll post back up what I learn. But I will say that the Metra kits I used on My Civic and several other cars were correct. Of course, when I install amps and use the pre-outs, this will become irrelevant, but I'd still like to know WTF, eh?
To start with, my FSM color coding does not match what's in my harness. Some wires are the same but some are not. And in some cases neither do any of the other diagrams I found show the same. But I noticed this: The Metra plugs show speaker polarity the same as the FSM, but the wiring diagrams at the links for Install Dr. (http://www.installdr.com/Harnesses/DCP-Wiring.pdf) and Jeep Stuff (http://snowboard247.blogspot.com/2005/05/1984-01-jeep-cherokee-xj-wiring-info.html) I found here reverse the speaker polarity! The info in those two actually switch the positive and negative leads for at least three speakers, compared to the other diagrams (Metra and FSM). You can compare them for yourself. WTF? So which is right? I guess I'm about to find out, when I install the unit today. I'll post back up what I learn. But I will say that the Metra kits I used on My Civic and several other cars were correct. Of course, when I install amps and use the pre-outs, this will become irrelevant, but I'd still like to know WTF, eh?
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