77 blower fan switch
Thread Starter
Racer
Joined: Sep 2002
Posts: 392
Likes: 0
From: Iowa
77 blower fan switch
While I am waiting for a wire diagram could someone tell me which wire (hookup position or color) is the power wire to the switch. I am assuming it runs from the fuse block to the switch with no other components in between. I downloaded the schematics that were posted but they are t blured to read. When I tested for power at the switch I didn't find any. Does anyone know the correct headlight high beam bulb number. Thanks
Burning Brakes
Joined: Jun 2002
Posts: 792
Likes: 2
From: Norcross GA
Re: 77 blower fan switch (jetech)
On a non a/c car it is clearly brown.
On an a/c car, it appears the brown wire goes into the function control switch (The panel with all the heater controls) and then goes out brown to the blower resistors. The function control switch appears to have a yellow wire that comes out of it and into the switch.
I posted a black and white reduced photocopy scan of these circuits here http://www.corvetteactioncenter.com/...threadid=18589 earlier this week.
Bob
On an a/c car, it appears the brown wire goes into the function control switch (The panel with all the heater controls) and then goes out brown to the blower resistors. The function control switch appears to have a yellow wire that comes out of it and into the switch.
I posted a black and white reduced photocopy scan of these circuits here http://www.corvetteactioncenter.com/...threadid=18589 earlier this week.
Bob
Thread Starter
Racer
Joined: Sep 2002
Posts: 392
Likes: 0
From: Iowa
Re: 77 blower fan switch (Bobchad)
Hi Bobchad
Thanks for the reply. I copied your scans but am unable to read any text on them. My car does have a/c but it is not working due to a bad condensor. I am not sure why there is no power at the blower switch at all. Today I am gong to jump a wire to the blower motor to see if it will run.
Thanks for the reply. I copied your scans but am unable to read any text on them. My car does have a/c but it is not working due to a bad condensor. I am not sure why there is no power at the blower switch at all. Today I am gong to jump a wire to the blower motor to see if it will run.
Burning Brakes
Joined: Jun 2002
Posts: 792
Likes: 2
From: Norcross GA
Re: 77 blower fan switch (jetech)
I have found that the best way to deal with these scans is to download them to your computer and then use an image editing program to blow them up to the point that they are readable.
Bob
Bob
Instructor
Joined: May 1999
Posts: 222
Likes: 0
From: Albany N.Y.
Re: 77 blower fan switch (jetech)
I see an orange wire maybe 14 ga. and a brown wire 14 ga. that go from the switch to the fuse box. Use a 12v test light to see if these are hot. Check the fuse and make sure there isn't any corrosion on the clips that hold the fuse. Tom
