ewan_mac

Can anyone tell me what the black wire with single connector is meant to be connected to or used for. The one that the finger is touching in the photo. This is from an 1986 Coupe. (BOSE radio). I have the shop manual but I do not see this in the wiring diagram.

WVZR-1

Model and part # off of the radio label?

kenpeindl

This maybe of help.
http://www.the12volt.com/installbay/...etail/512.html

ewan_mac

Part number on radio

WVZR-1

It should be ID'd in the FSM as "GRY" LIGHTS INSTRUMENT PANEL

ewan_mac

The instrument panel lights connection you mention is in the main connector body marked LAMP along with 12+, ANT and GND.

WVZR-1

Excuse me I took maybe to quick a "peek" and missed the C1 reference.. Look at your FSM to the extreme right of the radio schematic and look for C5 - check the wire for GRY/WHT and it would likely only be used for a C68 car as a dimming control for the C68 control.

I didn't use an '86 FSM for the "peek" but I'm quite sure you'll find it. It will/should also be contained in the conventional Delco radio.

***I did go back and check an '86 FSM and I don't see the C5 for the Bose but it's there for all of the rest of the years that use that part #'d receiver as OE. It was in the Delco (base) for an '86 though. I didn't look particularly close so maybe it actually is in the schematic.

ewan_mac

Wow, thanks for that. You pointed me in the right direction. All is clear now. I see that you are right and that the C5 gry/wht is there in the base radio diagram.

Also managed to find 1987 Bose radio wiring diagram and it actually includes the C5 connection.

dirtthrasher

gpierce

On that connector, Brown goes to the light switch (on with parking and headlights), the orange wire is hot all times from the Courtesy/Clock fuse.

dirtthrasher

Thank you. Sounds like it dims the radio? Can I leave it all unconnected?

Cruisinfanatic

It's not used on 84-89

gpierce

65Z01

My '88 FSM shows only two black wires, one is to Gnd the other goes to the Antenna.

Does that connector have two contacts, one for signal and one for shield?

dirtthrasher

WVZR-1

^^^^^^^^

This is a correct reference!!!

I believe that many can't see the OP's post because the 'snapshot' is captive to the 'PhotoBucket' issues and depending on the browser and adds used it's not seen. Here's a much newer post that has the same part #d radio and all of the connections that 'dirtthrasher' is referencing.

https://www.corvetteforum.com/forums...6041551-a.html

The most recent poster might just post his snapshots and forget about using this thread as as reference. The OP back from 6/16 mentioned Bose and if all of the info he posted was 'factual' he was sadly mistaken. The 16041551 isn't but a UU8 from '85 - '88 and maybe could be used for others!

Post #3 actually has sufficient info for this most recent poster!

LWesthaver

That particular wire is a pulse width modulated signal used to dim the digital display on the C68 climate control. The Bose radio shares it's diming signal with the C68.

See my site for more info: Bose replacement project

dirtthrasher

gpierce

WVZR-1

If you don't understand the 'install instructions' likely supplied with your 'after-market' radio you need an installer!! You either 'get it' or you don't.

Both POST#3 and the most recent link provided by LWesthaver have sufficient info that along with the install instructions should get you in business. Perhaps it's time for you to visit the AUDIO/ELECTRONICS Forum. It might get you much closer to success if you mention your 'after-market' by make/model!!