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1995 850 Turbo - Radio Plug Question

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

noev70t5
Posts: 47
Joined: Fri Mar 11, 2016 12:33 pm
Year and Model: 1995 850 TURBO
Location: Dallas
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noev70t5

1995 850 Turbo - Radio Plug Question

Post by noev70t5 » Sun Jul 21, 2019 7:04 pm

Hi guys hoping to get some incite before I have to go out of my way to a salvage yard to rip apart an 850...

Ultimately this is my fault.

My 1995 850 has a SC-816 Radio I put into it, but the car only has 3 main connectors in the back. One big plug with about 8ish wires, small plug with about 6-8ish wires, and a solid black connector with a single metal tip. Someone tried to put an amp that would mess with my other electronics so I figured id try to fix it. After looking at a few diagrams it seems that they had tapped into a consistent power wire for the radios anti theft - and while rewiring it, that wire touched the single black wires connector and I could see it was shocking it. Being arrogant my dumb*ss thought I could do simple quick connects without messing up...

I'm not getting power to my radio now. Everything else works well.

Question: How far do I have to go to get to the other side of the Big plug on the radio harness? What does it ultimately lead back to?

Attached is the wiring diagram: I'm talking specifically about 16/1 - Plug A - Wire #4 (R-SB) [Red and Black]

I want to find the other side of plug A so I can not only check for further damage but to replace that whole section of wiring - When searching I only see things about replacing the plug on the radio side, Id like to aim for replacing the whole thing

Thanks for any info!!
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2002 s60 Base - 215k - KIA [08-2014]
2000 s70 Base - 170k - Traded in [2015-16]
1998 v70 t5 - 232k - KIA [2016-2018]
2000 s70 Base - 180K KIA [2018-2018]
1995 850 TURBO - 77K [2019-]

noev70t5
Posts: 47
Joined: Fri Mar 11, 2016 12:33 pm
Year and Model: 1995 850 TURBO
Location: Dallas
Has thanked: 0
Been thanked: 0
United States of America
noev70t5

Re: 1995 850 Turbo - Radio Plug Question

Post by noev70t5 » Mon Jul 22, 2019 9:39 am

No surprise on no reply ONLY because I've NEVER seen the answer on pictures ect. I'm headed to the pick n pull now. I'll post pics soon


2002 s60 Base - 215k - KIA [08-2014]
2000 s70 Base - 170k - Traded in [2015-16]
1998 v70 t5 - 232k - KIA [2016-2018]
2000 s70 Base - 180K KIA [2018-2018]
1995 850 TURBO - 77K [2019-]

noev70t5
Posts: 47
Joined: Fri Mar 11, 2016 12:33 pm
Year and Model: 1995 850 TURBO
Location: Dallas
Has thanked: 0
Been thanked: 0
United States of America
noev70t5

Re: 1995 850 Turbo - Radio Plug Question

Post by noev70t5 » Mon Jul 22, 2019 4:28 pm

AWESOME lots of learning today.

If your constant power wire behind your radio (black and red wire**) ever touches the antenna wire while doing a wiring job and it grounds no need to worry!!!

Just check the RIGHT fuse. There are apparently 2 different radio fuses on a 1995 850. 32 and like 7. CHECK THEM BOTH

I ripped a plug out of the salvage yard but while I was there I tried to snag the whole harness. DAMN that was alot of work.

Endgame to all of this was that I blew a fuse while working and ended up rewiring everything for no reason. Lesson learned!!!


2002 s60 Base - 215k - KIA [08-2014]
2000 s70 Base - 170k - Traded in [2015-16]
1998 v70 t5 - 232k - KIA [2016-2018]
2000 s70 Base - 180K KIA [2018-2018]
1995 850 TURBO - 77K [2019-]

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