Vanagon EJ22 kill switch

[sikamore]

I live in Portland and a kill switch is mandatory if you want to keep possession of your van. My van has a Subaru EJ engine and Subaru pump relays. My first idea is to add a switch to lift the ground but can only find the ground on the pump itself. I want to keep my wiring inside the van and I think I have found the power to fuel pump ( see pic ) and am thinking of adding a switch to power supply. My questions are

1. Is this the power supply to the fuel pump?
2. Are there special considerations to adding a switch to power as opposed to ground?
3. Any advice to adding a kill switch on the fuel pump for a van with an EJ conversion?

[MarkWard]

It’s better practice to not run elec load through a switch. Most switches aren’t rated for continuous load amp draw.

Edit: I see you decided to stick with a toggle switch on the fuel pump ground. Pump can draw up to 7amps. Purchase a good quality switch that is rated for that load. When relays aren’t used, I prefer a DPST or double pole single throw switch. They have 2 sets of contacts so you can share the load.

Your switch needs to be where it can be easily bypassed if it fails to avoid getting stranded. Hope that helps.
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[sikamore]

Thanks for your reply. Adding a relay and switch to my ECU sounds daunting .. Maybe the simplest is to pick up the ground at the pump and add a couple feet of wire to bring switch into the cab ?

[BrownLoaf]

[markswagen]

l wouldn't touch the engines harness, you could cut the fuel pump, you could also cut the switched power to the ecu.
ie, the black wire from the ignition key, that would have gone to the coil, on the stock van.


what ever you decide to do, l would NOT broadcast it on the internets
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markswagen {mobile mechanic} san diego area all early VW's cared for.

619 201 0310

[sikamore]

Thanks, I will probably use the ground on the pump. It’s not an elegant solution but it is simple . It’s open season on Vans and I have been relying on my steering wheel club .

[Chilepines]

I recently learned that the ignition wire coming from the VW (D15 in the front fuse panel) to the Subaru side is a quite effective kill switch. Problem for me was the van created this on its own 6 hours after we bought it! That circuit is known to burn out from carrying too much current, so as Mark said I would want to have a substantial switch on that wire to use it as a kill switch.
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White 89 Westy with 2004 Subaru EJ25 - Betty

[fxr]