Master7122 Posted December 22, 2016 Share Posted December 22, 2016 My 87 Comanche didn't come with a radio and I was wondering if I could wire one in with the factory harness? I searched on here but couldn't find much on it Link to comment Share on other sites More sharing options...
Crash Posted December 22, 2016 Share Posted December 22, 2016 Is the vehicle side harness there? If so, the adapter for aftermarket radio is only a few bucks. Otherwise, check fsm/wiring diagrams for the wires and splice into those Link to comment Share on other sites More sharing options...
87MJTIM Posted December 22, 2016 Share Posted December 22, 2016 Master, here is a link to the 88 electric FSM. http://comancheclub.com/topic/12083-electrical-manual/ However, I have an 87 also. The radio wiring for my 87 is diff from the 88 diagrams. The 87 has two plug harnesses from the radio. One for the speakers and another for the electrics. The 88 diagram has a single plug harness. Also, the wire colors are diff for some of the wires. It is a start. I did purchase an original 87 electric manual. So I have the actual wiring diagrams for an 87. FYI Link to comment Share on other sites More sharing options...
gogmorgo Posted December 22, 2016 Share Posted December 22, 2016 When you say it didn't come with a radio, does that mean it had one but was removed before you got it, or was it a factory radio delete truck? If it's a radio delete it won't have speakers in the doors or B-pillars, and it wouldn't surprise me if it was missing the wires to go with as well, but you may get lucky. If you're only missing the radio head unit, most aftermarket radios will come with instructions for how to wire it. If you've got a voltmeter, you should be able to identify which wires do what in the truck's harness pretty easily. You'll have wires for: Constant 12V Switched (via ignition) 12V Lights (will have 12V when dash lights are all the way bright and will reduce as you dim the dash lights) Ground (will have continuity to ground - this is probably a female blade connector that goes straight to the chassis of the head unit on most) Left front speaker + Left front speaker - Right front speaker + Right front speaker - Left rear speaker + Left rear speaker - Right rear speaker + Left rear speaker - By trial and error you should be able to which wire pairs go to which speaker by touching them to the ends of a AA battery. Frequently the negative wires will be the same colour as the positive wire for the same speaker, but with a stripe. It doesn't matter which way the speakers are wired, +/-, so long as they're all done the same way, which may be difficult to tell via AA battery. But to be on the safe side getting the factory wire colours will be the best bet. If you're having to install everything, well, the sky's the limit as to how you want to wire it, although you should be able to find factory wires if you don't already have them, pretty sure they're part of the main dash and interior harness. At least you've got somewhere to put speakers... this isn't the case for my Niva which simply didn't have a radio as a factory option and has nowhere appropriate to put speakers, so getting it set up has been a slow process. Link to comment Share on other sites More sharing options...
schardein Posted December 22, 2016 Share Posted December 22, 2016 My truck was a radio delete and it didn't have the front speaker wires, also it didn't have the rubber tunnel between the body and the doors, just plastic plugs in the body and door. I had to add the antenna, wires, and rubber tunnel. Link to comment Share on other sites More sharing options...
Master7122 Posted December 22, 2016 Author Share Posted December 22, 2016 My truck does not have a vehicle side harness for a radio. The po put a radio in it but tapped into the fuse box and put some house speakers under the seats. Although my radio does technically work it just looks trashy with all the wires hanging down into the fuse box. Also I'm pretty sure I have speakers but I'm not 100% I'll have to check Link to comment Share on other sites More sharing options...
Master7122 Posted December 22, 2016 Author Share Posted December 22, 2016 Okay well it looks like I have front door speakers but no back speakers, the wiring looks to be there for the rear speakers but I'm not sure if it's the speaker wiring. I just shinned a flashlight into the vent looking thing and seen it Link to comment Share on other sites More sharing options...
gogmorgo Posted December 22, 2016 Share Posted December 22, 2016 I want to say the rear speakers were 6x9's, but I could be wrong. They were optional though, so not all trucks had them. Link to comment Share on other sites More sharing options...
Minuit Posted December 22, 2016 Share Posted December 22, 2016 4x6. There should be brackets back there where the speaker goes, but lots of trucks didn't come with them. Link to comment Share on other sites More sharing options...
SledNeck91604 Posted January 21, 2018 Share Posted January 21, 2018 I know this threads been dead a year now but I found radio power and speaker harness connectors in my '87 factory radio-delete truck..Sent from my SM-G930V using Tapatalk Link to comment Share on other sites More sharing options...
Fredo Posted November 11, 2022 Share Posted November 11, 2022 On 12/22/2016 at 4:52 PM, Minuit said: 4x6. There should be brackets back there where the speaker goes, but lots of trucks didn't come with them. http://i.imgur.com/qYHlBXBl.jpg yo don't happen to have the dims and measurements of the brackets, do yuo? Link to comment Share on other sites More sharing options...
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