|
Register or Log In To remove these advertisements. |
|
|
|
|||||||
 |
|
|
Thread Tools | Display Modes |
|
|
07-05-2006, 11:16 PM
|
#1 |
|
Registered User
Join Date: Oct 2002
Location: Oklahoma City
Posts: 17
|
Who Has A Unmolested 72 w/ Factory A/C?
I have a 72 Custom Camper with factory A/C that I need some wiring help with. I need to know where the 12V feed for the high speed blower relay should be plugged in to the fuse box. On my truck, when I got it, it was plugged in where I have circled in yellow and I keep blowing the 15A fuse labled GL BOX SPOT LP circled in red. Circled in blue are some terminals labled IGN UNFUSED I could plug it into, but the unfused part has me concerned as I haven't found the 30A inline fuse I'm used to seeing on GM Vehicles for the high speed blower. Where should this feed be plugged in?
 
|
|
|
|
07-05-2006, 11:24 PM
|
#2 |
|
Registered User
Join Date: Apr 2006
Location: oklahoma
Posts: 10,669
|
Re: Who Has A Unmolested 72 w/ Factory A/C?
It goes into the cigarrete lighter port on a 72. It is sopposed to be un fused. hope this helps.
|
|
|
|
|
07-06-2006, 12:25 AM
|
#3 | |
|
Registered User
Join Date: Oct 2002
Location: Oklahoma City
Posts: 17
|
Re: Who Has A Unmolested 72 w/ Factory A/C?
Quote:
|
|
|
|
|
|
07-06-2006, 12:31 AM
|
#4 |
|
Registered User
Join Date: Oct 2001
Location: Grapevine, Tx.
Posts: 2,142
|
Re: Who Has A Unmolested 72 w/ Factory A/C?
AncientOrange
The above post was correct. This Diagram shows it plugged into the receptacle CIG
__________________
John Hutchison Grapevine,Texas 68 1/2 t swb 68 Mustang 69 Jaguar 71 1/2 t swb 88 Supra CompTs6m 93 Escort GT 2005 Corolla XRS |
|
|
|
|
07-06-2006, 12:53 AM
|
#5 |
|
Registered User
Join Date: Oct 2002
Location: Oklahoma City
Posts: 17
|
Re: Who Has A Unmolested 72 w/ Factory A/C?
Thanks and I'm curious what book that schematic came out of. That helps a bunch. The only schematic I have is out of a Haynes manual and it doesn't show the H/S blower relay at all. I saved that pic.
Also interenting where it says to replace the existing heater fuse with a 25A fuse. I'm guessing that must source and protect the cig lighter and H/S blower tap. I've been fighting this problem for a while now. I just replaced the H/S blower relay after finally figuring out where GM hid that on this truck. Thanks again for everyone's help. 
|
|
|
|
|
07-06-2006, 02:44 AM
|
#6 |
|
Registered User
Join Date: Jul 2005
Location: Mexico
Posts: 92
|
Re: Who Has A Unmolested 72 w/ Factory A/C?
67 - 72 Chevrolet truck factory manual
|
|
|
|
|
07-06-2006, 08:52 AM
|
#7 |
|
Senior Member
Join Date: Jun 2001
Location: Shelbyville, KY
Posts: 3,261
|
Re: Who Has A Unmolested 72 w/ Factory A/C?
One real common problem on the A/C trucks is the gound for the A/C fan motor relay that mounts on the side of the heater box behind the glove box. You loose low speeds on the fan if this gound is not solid so while there----.
|
|
|
|
|
07-06-2006, 09:25 AM
|
#8 |
|
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
|
Re: Who Has A Unmolested 72 w/ Factory A/C?
One thing that is certain on these trucks is the wiring from the factory is not very good. The headlight switch and the high-speed fan are two good examples.
When I converted from non-AC to AC I fixed the high speed fan thing. I ran a 10 gauge wire from the battery, through a 20 amp in-line fuse, to the business side of a 30 amp relay. Now I get a clean, 12-14 amps for the high speed fan, and I don't have any burnt connectors like the connector behind the fan switch or the red wire shown in photo #1 above. I've never seen a truck in the yard that didn't have both of the above connectors partially or fully melted. This mod, and the headlight switch relays are two REALLY good mods to do if you are interested in fixing these items only once.
__________________
'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
|
|
|
|
| Bookmarks |
|
|
Hybrid Mode
