Tank Selector Switch - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Lynx · 08-08-2004, 06:53 PM

Either im blind or its gone but I cant find the seach function any more so here is yet another Selector switch question.

Tanks wont and never have switched. It is stuck on the left hand side tank and im trying to figure out where the problem is.

The system I have on my 83 is the one with the switch with the 4 prongs on the back conecting to a pink,black,lt green, and drk green wires.

I Have cleaned up the grounds and thats not my problem. So now im checking the switch. Is there any "Bench test" that I can do on this switch to see if its working as it should?

Russell · 08-08-2004, 07:18 PM

Umm, try putting 12 volts on it and listen to hear if it clicks. If you can, try rigging up a setup on the output (side with one tube) that will squirt water through the solenoid, and apply / take off 12 volts and see if the water comes out of each of the two tubes, dependant on if 12 volts is applied or not, or if water comes out of both tubes.

Lynx · 08-08-2004, 07:30 PM

Im first trying to find out if its the switch in the cab. Then if its working fine ill check out the actual valve

full foot notch · 08-09-2004, 12:23 AM

im just taking a stabin the dark about the wiring, like i said, A GUESS, but pink most likely is the 12v, black is ground, and the lt green and drk green are the different tank senders/pumps

Lynx · 08-09-2004, 12:56 AM

Yup, ive got power at the switch and at the valve, so it seems that the wiring and switch is all good. I guess its the fault of the valve itself, im going to price one out tommorow.

08-08-2004, 06:53 PM	#1
Lynx Registered User Join Date: Jun 2003 Location: Fort McMurray, Alberta, Canada Posts: 513	Tank Selector Switch Either im blind or its gone but I cant find the seach function any more so here is yet another Selector switch question. Tanks wont and never have switched. It is stuck on the left hand side tank and im trying to figure out where the problem is. The system I have on my 83 is the one with the switch with the 4 prongs on the back conecting to a pink,black,lt green, and drk green wires. I Have cleaned up the grounds and thats not my problem. So now im checking the switch. Is there any "Bench test" that I can do on this switch to see if its working as it should? __________________ Ben 1983 Silverado SWB 305 2002 Silverado Extended Cab 5.3 http://members.shaw.ca/bkennett

08-08-2004, 07:18 PM	#2
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Umm, try putting 12 volts on it and listen to hear if it clicks. If you can, try rigging up a setup on the output (side with one tube) that will squirt water through the solenoid, and apply / take off 12 volts and see if the water comes out of each of the two tubes, dependant on if 12 volts is applied or not, or if water comes out of both tubes. __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

08-08-2004, 07:30 PM	#3
Lynx Registered User Join Date: Jun 2003 Location: Fort McMurray, Alberta, Canada Posts: 513	Im first trying to find out if its the switch in the cab. Then if its working fine ill check out the actual valve

08-09-2004, 12:23 AM	#4
full foot notch Registered User Join Date: Apr 2003 Location: Central florida Posts: 3,223	im just taking a stabin the dark about the wiring, like i said, A GUESS, but pink most likely is the 12v, black is ground, and the lt green and drk green are the different tank senders/pumps

08-09-2004, 12:56 AM	#5
Lynx Registered User Join Date: Jun 2003 Location: Fort McMurray, Alberta, Canada Posts: 513	Yup, ive got power at the switch and at the valve, so it seems that the wiring and switch is all good. I guess its the fault of the valve itself, im going to price one out tommorow.



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