i have a 94 b4000 and went to wire in an aftermarket radio and cut off the radio clips and was going to wire it but i ran into a problem i looked up what the colors were and matched them and it turns on and everything but the ground for the speakers is all the same wire instead of each speaker having its own ground wire and i don't know how i would ground them so that they work. please help!

 

After a quick google search this is what I found for a 94 Mazda B-Series pickup.

Car Radio Battery Constant 12v+ Wire: Green/Yellow
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Blue/Red
Left Front Speaker Positive Wire (+): Orange/Green
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): White/Green
Right Front Speaker Negative Wire (-): Black/White
Left Rear Speaker Positive Wire (+): Pink/Green
Left Rear Speaker Negative Wire (-): Pink/Blue
Right Rear Speaker Positive Wire (+): Pink/Blue
Right Rear Speaker Negative Wire (-): Green/Orange

 

Yes I used that but there is only one ground for the truck speakers and my radio has a diffferent ground for all the speakers so I'm wondering how I can hook it up

 

different grounds for the speakers? I have never heard of this, I have hooked up many decks and speakers, and the speakers themselves never had a separate ground to the chassis, positive and negative to the stereo itself, and the ground wire from the deck to a good clean chassis ground point. When you hook up that ground wire from the deck make sure to scrape the paint off to the bare metal so you have a nice clean ground. if you already did that and your not getting sound from the speakers, then recheck your wiring.

 

Sorry didn't mean ground meants negative there's only on negative wiRe for all the speaker if u look at the chart the second guy posted ull see what I mean

 

Ok then, that makes more sense, yeah I understand the wiring diagram above, Is there only one negative wire coming off the stereo itself or from the vehicle's wiring? If it is from the vehicle, I am wondering if these wires got cut somewhere farther down the wiring harness or loom, that is not visible.

 

Could I just splice all my negatives into that one wire?

 

To be honest I'm not sure,I don't want to see you mess anything up, I have been doing a search on Google but I can't find anything for sure, maybe somebody with some more knowledge can chime in here. Meanwhile if I find anything I will let you know

 

you might be able to wire the speakers in parallel, if you only have one negative.
here is an article that explains this, series vs parallel wiring, you have to be aware of the impedance load capability of the deck, and the impedance of the speakers.
https://www.termpro.com/asp/pubs.asp?ID=124

 

awesome thanks for the help much appreciated!

 

To be honest, your best and least troublesome way to resolve this would be to bite the bullet and just forget all but the power and ground wires on the factory harness and just run new wires to all of the speakers. I know it might seem like a pain, but if you are that unsure about it, the new wires should be a guaranteed fix. Plus, if you can afford it, it would be a great time to put in new speakers. But with doing this, you would have quite a bit of time invested in pulling a lot of panels off. But it would definitely be worth it in the end.

 

I agree, this would be the best solution, and definitely well worth the effort, not only in the sound quality, but the functionality as well, because if those speakers are wired in parallel like that you are still using only one channel (mono). if you go this route you can utilize all the channels of the deck and the fader controls etc. will all work as intended and you will be in stereo as well. Thanks Dewey

glad it helped some, but you should consider Dewey's advice above, it would be the best way to go. I was just trying to get you a quik fix.