For sure you want a relay that can handle the load.
Since you are using a Vanagon FP, I'd just use a vanagon FP relay - then I'd
know it was sufficient. 

How is it you need 3 relays total ? 
I figure one for powering up the ECU, one for FP.
That's how all waterboxer vanagons are - what would jetta have that's extra
? 

I for sure wouldn't' use anything from an air-cooled vanagon,
I'd get the box with two relays in it, mounted above the coil, on any 83 and
up waterboxer vanagon.
Not wanting to deal with small parts sales right now, but I got 'em. 
Very easy to get, from any waterboxer vanagon.  
Scott
www.turbovans.com 

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
neil N
Sent: Tuesday, April 08, 2008 12:16 PM
To: vanagon@GERRY.VANAGON.COM
Subject: 4 pin fuel pump relay(s) question.

Hi all.

This is for my Jetta engine into Vanagon conversion, but I am using
the Vanagon FP.

My thought:

use '85 Vanagon relay block to mount relays needed for my
Jetta/Vanagon conversion. 2 of 3 needed fit, but Jetta FP relay does
not.

Jetta fuel pump relay has pins set up differently. 2 spades are
larger, one smaller. All in a different arrangement.

I have another VW relay with 4 pins. Compared to the Jetta relay, they
both have the same pin numbers and schematic label on them. No amp
rating, but they look like they do the same thing.

If the amperage rating is the same, could I swap in the other VW relay
or use a FLAPS type relay?

Pretty sure it would work safely, but just checking in with the more
knowedgable electrical minds.

Thanks!

Neil.

--
Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"

http://web.mac.com/tubaneil
http://tubaneil.googlepages.com/

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