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[RESOLVED] Correct rewire relay info?

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Jdiddy2k4

15+ Year Contributor
271
2
Jan 19, 2004
San Antonio, Texas
So I see one set of relay wiring instructions on vfaq and a different set here (they have the 30 and 87 pins swapped). Which one is correct for a 2g AWD ?
from tuners
* 30 - feed wire from battery
* 87A - Not used
* 87 - when cutting stock 12V pump wire, this is to the pump
* 86 - when cutting stock 12V pump wire, this is to the car
* 85 - when cutting stock ground wire, this is to the car

or
from vfaq
Main f.p. wire (from battery) to 87 (contact).
Blue wire from white f.p. connector to 30/51 (contact).
Blue wire from harness to 86 (coil positive).
Red (or whatever color you used) wire to 85 (coil ground).
 
So I see one set of relay wiring instructions on vfaq and a different set here (they have the 30 and 87 pins swapped). Which one is correct for a 2g AWD ?
from tuners
* 30 - feed wire from battery
* 87A - Not used
* 87 - when cutting stock 12V pump wire, this is to the pump
* 86 - when cutting stock 12V pump wire, this is to the car
* 85 - when cutting stock ground wire, this is to the car

or
from vfaq
Main f.p. wire (from battery) to 87 (contact).
Blue wire from white f.p. connector to 30/51 (contact).
Blue wire from harness to 86 (coil positive).
Red (or whatever color you used) wire to 85 (coil ground).

I used the top method but this was on a 1g? Not sure how much this helps you. Might be the same though.
 
So I see one set of relay wiring instructions on vfaq and a different set here (they have the 30 and 87 pins swapped). Which one is correct for a 2g AWD ?
from tuners
* 30 - feed wire from battery
* 87A - Not used
* 87 - when cutting stock 12V pump wire, this is to the pump
* 86 - when cutting stock 12V pump wire, this is to the car
* 85 - when cutting stock ground wire, this is to the car

or
from vfaq
Main f.p. wire (from battery) to 87 (contact).
Blue wire from white f.p. connector to 30/51 (contact).
Blue wire from harness to 86 (coil positive).
Red (or whatever color you used) wire to 85 (coil ground).

Relay Basics

I'd use the top wiring since it's more standard to connect the source to be switched to pin 30 and use 87 as the output.
If you relay includes a diode across the coil then you need to make sure that the polarity for the 85 and 86 connections are correct.
 
So I see one set of relay wiring instructions on vfaq and a different set here (they have the 30 and 87 pins swapped).
Give me that link.

Never use red for ground. :rolleyes:

37781d1094548329-how-rewire-fuel-pump-bosch-relay-wiring-diagram-relaywiringguide.jpg
 
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