Our outside radio is stuck on mute for our Komfort Trailblazer RV. How do we reset it?

That type in information is difficult to come by. You are better off in the specialist RV Forums.

https://www.google.com/search?q=Wiring+schematic+for+a+88+Komfort+Motorhome

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Contact Komfort directly to determine whether thee manual is available.

1997 Komfort Travel Trailer/5th Wheel Prices and Specs
Select a Year and Model

Since 1966, Komfort has assembled quality built recreational vehicles. The Komfort name would be attached to numerous products including travel trailers, fifth wheel trailers, Class A motorhomes and park models. Shortly after leaving the business of motorhome production, Komfort joined Thor Industries in 1993 specializing in recreational trailers.
Komfort Note
TRAVEL TRAILERS/5TH WHEELS - No further information after 2012.
2004 and newer prices include A/C, microwave, awning, DSI water heater stab jacks, AM/FM/CD/DVD and spare tire with carrier.
Show Specs Hide Specs
(Model years 2013 - 1972)
5th Wheel
Length
Width
Coach
Design
Axle(s)
Weight
(lbs)
Self
Cont.
Slides
M-22-LF
22'7'Fifth Wheel23442Yes
M-23-F
24'8'Fifth Wheel24680Yes
M-24-FS
25'8'Fifth Wheel26370Yes1
M-26-F
26'8'Fifth Wheel25480Yes
M-25-FS
27'8'Fifth Wheel27120Yes1
M-26-FS
27'8'Fifth Wheel27120Yes1
M-30-FS
31'8'Fifth Wheel28660Yes1
M-32-FS
33'8'Fifth Wheel29596Yes2
M-35-FS
36'8'Fifth Wheel211021Yes3
Travel Trailers
Length
Width
Coach
Design
Axle(s)
Weight
(lbs)
Self
Cont.
Slides
M-17-L
19'7'Travel Trailers22880Yes
M-18-L
19'7'Travel Trailers22950Yes
M-20-LB
20'7'Travel Trailers22935Yes
M-19-T
20'8'Travel Trailers23540Yes
M-22-T
24'8'Travel Trailers24171Yes
M-23-TB
25'8'Travel Trailers24360Yes
M-24-TQ
26'8'Travel Trailers24640Yes
M-25-T
26'8'Travel Trailers24540Yes
M-24-TS
27'8'Travel Trailers25170Yes1
M-25-TB
27'8'Travel Trailers24290Yes
M-25-TBS
27'8'Travel Trailers25731Yes1
M-25-TS
27'8'Travel Trailers25560Yes1
M-26-T
29'8'Travel Trailers25060Yes
M-28-TS
29'8'Travel Trailers27295Yes1
M-29-T
30'8'Travel Trailers25750Yes
M-30-TS
31'8'Travel Trailers27286Yes1
M-32-TS
31'8'Travel Trailers28060Yes1

try a rv shop

I'm looking for a owners manual for my 86 Komfort RV can't find one anywhere

I have found they don't exist. The chassis comes from the manufacturer that built the vehicle. Komfort(or any others) buy it from them. Then they add the living space on. This , like any mobile home, or house is built by electricians. the electrical panel tells you what fuse goes to certain plugs, lights, and appliances. If you pull the panel cover you will see that are only 3 or 4 wire colors in it. Black, white, red, and green/ground.(or bare wire, ground)

We do not have any manuals for RV's. Sorry

I have a 06 Z71 and it did the same thing so more than likely your just going to have to buy a new cd player. I would recommend going with an aftermarket cd player because you probably going to spend just as much on another stock unit.

Some radios have phone buttons that mute the speakers so you can talk on the phone. If you have Onstar and no active subscription it can also mute the radio thinking you are trying to talk to Onstar.