79 Blazer HU install

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blazer79

Member - Posts: 12

Joined: May 30, 2005

Posted: May 31, 2005 at 10:02 PM / IP Logged

I've talked to a couple of different people on the subject and gotten the same basic awnser, "cut". But nothing more than that.

Question is this...when installing a HU into a 79 blazer with the OEM style dual knob radio what all needs to be cut, do you still need to buy a install kit, how exactly do you cut the plastic face on the dash that goes over the HU, does the HU go back in after or before the plastic face? I am planning on rewireing everything, and i mean everything on the radio. If you have a step by step and some photos i would appreciate it..i know someone out there has to have pictures of an OEM system they have replaced with a HU.

I appreciate any help anyone can give and will be checking back soon..thanx

auex

Platinum - Posts: 5,041

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Joined: December 23, 2002

Location: Arizona, United States

Posted: May 31, 2005 at 10:07 PM / IP Logged

There are kits available, but you still have to cut the dash. You should pay for this to get done if you don't have an airsaw.

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rallysport

Copper - Posts: 172

Joined: April 10, 2004

Location: United States

Posted: May 31, 2005 at 10:27 PM / IP Logged

have you taken the radio out yet? im assuming not, when you do youll see what needs to be cut. there should be a circular hole for each knob then a rectangle in teh middle. of course for any din size youll have to cut out a bigger rectangle to match the cage of the new radio

blazer79

Member - Posts: 12

Joined: May 30, 2005

Posted: May 31, 2005 at 10:27 PM / IP Logged

i have an air saw..i have almost any tool you can think of since my dad owned a mechanic shop with like 9 bays so its not a matter of tools...how much would it cost to have it installed?...and what are the pros and cons of an underdash unit?

blazer79

Member - Posts: 12

Joined: May 30, 2005

Posted: May 31, 2005 at 10:29 PM / IP Logged

sorry...posted at same time as you..i have taken out the radio but put it back in...does the kit you buy to install it have pieces that will cover the huge gaps above and below the unit?

auex

Platinum - Posts: 5,041

Joined: December 23, 2002

Location: Arizona, United States

Posted: May 31, 2005 at 10:35 PM / IP Logged

The metra kit comes with a metal bracket to support the radio's cage and goes behind the factory plastic. It also comes with a platic plate that goes infront of the factory plastic and will cover any gaps. You can use the metal bracket as a guide, it works well as a guide because it can screw right to the factory screws and give a good outline. Be careful with the airsaw and don't let it vibrate the dash too much as it can cause the instrument needles to snap.

Certified Security Specialist

Always check info with a digital multimeter.

I promise to be good.

Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

blazer79

Member - Posts: 12

Joined: May 30, 2005

Posted: May 31, 2005 at 10:40 PM / IP Logged

thanks auex..that is the main information i have been looking for the whole time..not that you other guys didn't help but i was looking for certain info..guess i should have been more specific in my questions..all you guys on here are awesome..thanks everyone..if anyone else has any advice though i would appreciate it as well..

samroza

Member - Posts: 43

Joined: May 27, 2005

Location: United States

Posted: May 31, 2005 at 10:40 PM / IP Logged

I once did an install in a late-70s/early 80s Chevy pickup. I just used a fiber cutting wheel to cut out the knob supports. Pretty much every wire will need to be cut, and if I was doing the install, I'd think real hard about maybe running new speaker wires. It would really only take a few minutes per side to run new front speaker lines.

Sam Roza

blazer79

Member - Posts: 12

Joined: May 30, 2005

Posted: May 31, 2005 at 10:43 PM / IP Logged

yea..i am going to rewire the entire unit..power, remote, ground and speakers..so are there indentions outside of the knob's where i would need to cut or should i hold the cd player up to it and trace to know where to cut?

blazer79

Member - Posts: 12

Joined: May 30, 2005

Posted: May 31, 2005 at 10:44 PM / IP Logged

please also read previous post but i was also going to ask if anyone knows where the front speakers are..i don't know if there are any?

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