How to soup up windsheild wipers, and heater fan?? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72 longhorn BB · 09-12-2005, 03:27 PM

Go to:

www.raintracker.com

if you want to get more speeds out of your wipers

This rain sensor will do the trick. Just installed one on my Neon - love it.

Next up, install on teh C-20

86swb · 09-12-2005, 04:48 PM

This rain tracker. How hard was it to install and how long did it take you? Will this work or the '67-'87 trucks?

masterbeavis · 09-13-2005, 01:57 AM

Furthest their catalog/compatibility goes is to '85

GMC Jim · 09-13-2005, 05:50 AM

Per GM Shop Manual; the heater blower specs are:- RPM- 2550 to 2950; 13.5 volts @ 6.25 amps max. Air conditioning blower specs are:- RPM- 3700 min.; 15.5 amps max.....As these specs indicate; the blower used with air conditioning is much more powerful. Fuses used with heater only is 15 amp.; air cond. is 25 amp. Marine standards allow 14 guage wiring for non-critical loads of 20 amps at a distance of 10 feet or less. Wiring diagrams show # 12 wire from fuse block to blower motor relay and from the relay to the blower used with trucks with air conditioning, however I have seen # 12 wiring on non air trucks. In any case; replace the existing heater fuse with 20 amp. and the wiring will have no problem sustaining the extra load of the heavy duty blower motor. Be sure sure to examine the wiring for any fraying and replace. If replacement is desired; use # 12 wire from fuse block to relay and from relay to blower motor. Using #12 wire will minimize voltage drop for more efficient blower operation.

al's71gmc · 09-13-2005, 06:58 AM

I just went out to the parking lot and fixed my heater!! Well fixed is a little strong, the plug in from the blower was undone.

BTW I checked the fuse box first and mine's got a 25 amp fuse in it already. It's marked on the box for 25, and it's a non ac. Anyway, I've got heat and it might even defrost the windshield now!!

86swb · 09-13-2005, 07:32 AM

Quote:

Originally Posted by masterbeavis

Furthest their catalog/compatibility goes is to '85

They can go back farther but they would need your wireing diagram for your year of truck.

72 longhorn BB · 09-13-2005, 08:12 AM

The method of operation is pretty straight forward. If I can get a copy of the schematice for our trucks, I'll make a diagram and post it for all to use.

I LOVE how it works on my Neon - all you do is flip a switch and it will wipe as much, or as little as needed.

It automatically varies the wiper speed from slow puled wipes, to faster pulsed wipes, then to constant low speed and to constant high speed - all depending on how much water it senses on the windshield.

One thing though; it needs to be placed within only ONE wipe pattern - preferably the passenger side near the center mirror - and also 2" inside the arc of the wiper tip.

I love it and will install it as soon as I can get a vehicle schematic to work out the interface.

86swb · 09-13-2005, 09:11 AM

Do you think this is something the advarge guy can install?

72 longhorn BB · 09-13-2005, 11:43 AM

sure it can , as long as I can get ahold of the wiper schematic for 67-72 chev trucks, I can make a wiring diagram.

Does anyone have a schematic of the truck wiring?

09-12-2005, 03:27 PM	#26
72 longhorn BB Registered User Join Date: Jan 2000 Location: Michigan Posts: 312	Try this Go to: www.raintracker.com if you want to get more speeds out of your wipers This rain sensor will do the trick. Just installed one on my Neon - love it. Next up, install on teh C-20 __________________ Chuck 1972 C-20 Longhorn 402 BB .030" over (409?), curved HEI, RV cam, quadrajet, dual 3" exhaust, TH 400 ported w/shift kit 1999 K1500 Suburban (old style) 5.7L Vortec 4L60E "No matter where you go, ........ there you are"

09-12-2005, 04:48 PM	#27
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	This rain tracker. How hard was it to install and how long did it take you? Will this work or the '67-'87 trucks? __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

09-13-2005, 01:57 AM	#28
masterbeavis Having issues Join Date: Jul 2005 Location: Eldorado Ca, an hour east of sacramento Posts: 696	Furthest their catalog/compatibility goes is to '85 __________________ Quando Omni Flunkus Moritati. The Man's Prayer: "I'm a man, but I can change, if I have to, I guess."

09-13-2005, 05:50 AM	#29
GMC Jim Senior Member Join Date: Dec 2002 Location: Portland, Oregon Posts: 901	Per GM Shop Manual; the heater blower specs are:- RPM- 2550 to 2950; 13.5 volts @ 6.25 amps max. Air conditioning blower specs are:- RPM- 3700 min.; 15.5 amps max.....As these specs indicate; the blower used with air conditioning is much more powerful. Fuses used with heater only is 15 amp.; air cond. is 25 amp. Marine standards allow 14 guage wiring for non-critical loads of 20 amps at a distance of 10 feet or less. Wiring diagrams show # 12 wire from fuse block to blower motor relay and from the relay to the blower used with trucks with air conditioning, however I have seen # 12 wiring on non air trucks. In any case; replace the existing heater fuse with 20 amp. and the wiring will have no problem sustaining the extra load of the heavy duty blower motor. Be sure sure to examine the wiring for any fraying and replace. If replacement is desired; use # 12 wire from fuse block to relay and from relay to blower motor. Using #12 wire will minimize voltage drop for more efficient blower operation. __________________ '71 GMC;fleetside;PB/PS/AC/CC/402 Eng./Custom Paint/110,000act miles/3 fuel tanks(52gal).

09-13-2005, 06:58 AM	#30
al's71gmc 4 eyed fever Join Date: Jul 2005 Location: Eureka, Nevada Posts: 500	I just went out to the parking lot and fixed my heater!! Well fixed is a little strong, the plug in from the blower was undone. BTW I checked the fuse box first and mine's got a 25 amp fuse in it already. It's marked on the box for 25, and it's a non ac. Anyway, I've got heat and it might even defrost the windshield now!! __________________ 1971 GMC 2500 4x4 1972 GMC Sierra Grande 1/2 t 4x4-#1 son's truck. Recently completed resto. 4 YO daughter," Daddy, I like your truck better than Mom's." (2000 F350-ranch truck) Smart kid!! Last edited by al's71gmc; 09-13-2005 at 07:00 AM.

09-13-2005, 08:12 AM	#32
72 longhorn BB Registered User Join Date: Jan 2000 Location: Michigan Posts: 312	It should be able to work The method of operation is pretty straight forward. If I can get a copy of the schematice for our trucks, I'll make a diagram and post it for all to use. I LOVE how it works on my Neon - all you do is flip a switch and it will wipe as much, or as little as needed. It automatically varies the wiper speed from slow puled wipes, to faster pulsed wipes, then to constant low speed and to constant high speed - all depending on how much water it senses on the windshield. One thing though; it needs to be placed within only ONE wipe pattern - preferably the passenger side near the center mirror - and also 2" inside the arc of the wiper tip. I love it and will install it as soon as I can get a vehicle schematic to work out the interface. __________________ Chuck 1972 C-20 Longhorn 402 BB .030" over (409?), curved HEI, RV cam, quadrajet, dual 3" exhaust, TH 400 ported w/shift kit 1999 K1500 Suburban (old style) 5.7L Vortec 4L60E "No matter where you go, ........ there you are"

09-13-2005, 09:11 AM	#33
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Do you think this is something the advarge guy can install? __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

09-13-2005, 11:43 AM	#34
72 longhorn BB Registered User Join Date: Jan 2000 Location: Michigan Posts: 312	sure it can... sure it can , as long as I can get ahold of the wiper schematic for 67-72 chev trucks, I can make a wiring diagram. Does anyone have a schematic of the truck wiring? __________________ Chuck 1972 C-20 Longhorn 402 BB .030" over (409?), curved HEI, RV cam, quadrajet, dual 3" exhaust, TH 400 ported w/shift kit 1999 K1500 Suburban (old style) 5.7L Vortec 4L60E "No matter where you go, ........ there you are"



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