Fuel selector valve ?

[idipwr]

Anyone have the wiring diagram for what each pin is for? Mine doesnt seem to want to switch from the front to the back tank. Fuse is good. Do they default to the front tank?

Thanks

 

[Patrick Feeley]

Try this:

Tank Selector Valve (Diesel Only) Component Testing Procedure

On the Selector Valve Connector, the terminals are:
Pin 1: Not used
Pin 2: 789 (BR/W)
Pin 3: 786 (R)
Pin 4: 673 (DB/Y)
Pin 5: 29 (Y/W)
Pin 6: 675 (Y/LB)

To Test the Rear Tank Circuit:
Briefly Apply 12V Power to Terminals 789 (BR/W) (+) and 786 (R) (-)
Connect Self-Powered Test Lamp or Ohmmeter to Terminals 29 (Y/W) and 675 (Y/LB): A good Switch will indicate Closed Circuit
Connect Self-Powered Test Lamp or Ohmmeter to Terminals 29 (Y/W) and 673 (DB/Y): A good Switch will indicate Open Circuit

To Test the Front Tank Circuit:
Briefly Apply 12V Power to Terminals 786 (R) (+) and 789 (BR/W) (-)
Connect Self-Powered Test Lamp or Ohmmeter to Terminals 29 (Y/W) and 675 (Y/LB): A good Switch will indicate Open Circuit
Connect Self-Powered Test Lamp or Ohmmeter to Terminals 29 (Y/W) and 673 (DB/Y): A good Switch will indicate Closed Circuit

Check that the source and return valve transfer between front and rear positions. NOTE: A brief “zip” sound can be heard when the valve transfers.

Cheers!