Thread: Cut out switch

Originally Posted by scruffy

Hi All, Just want to know the best way to put in an anti-theft cut-out switch in line with the fuel pump power feed wire??? As to my previous post about the starter motor, ended up having to remove the manifold and cutting the heads of the bolts. Many thanks to all who made suggestions of help. Bob

To isolate the fuel pump you should find the fuel pump relay, then connect your isolator to one of the relay operating wires rather than the main power wires.

Originally Posted by bee utey

To isolate the fuel pump you should find the fuel pump relay, then connect your isolator to one of the relay operating wires rather than the main power wires.

Thanks Bee Utey, any idea on where / which is the fuel pump relay. Cant narrow it down exactly to which relay it is in the r/h side kick panel. Also, veh is 93 D1 V8. Bob

Originally Posted by scruffy

Thanks Bee Utey, any idea on where / which is the fuel pump relay. Cant narrow it down exactly to which relay it is in the r/h side kick panel. Also, veh is 93 D1 V8. Bob

I don't have data specific to the '93. The '95 has relay K119 as one in the top row, nearer to the door pillar, white/green stripe wire is the control wire to the ECU, fat white/purple wire is the main wire to the pump. Put your finger on the relay and listen to the pump when you turn on the key. When sound and feel coincide you have your baby. then double check with a multimeter that its powering with the pump. Colours should be same, I don't thimk they changed much.

BTW all the info is from RAVE manual.

Originally Posted by bee utey

I don't have data specific to the '93. The '95 has relay K119 as one in the top row, nearer to the door pillar, white/green stripe wire is the control wire to the ECU, fat white/purple wire is the main wire to the pump. Put your finger on the relay and listen to the pump when you turn on the key. When sound and feel coincide you have your baby. then double check with a multimeter that its powering with the pump. Colours should be same, I don't thimk they changed much.

BTW all the info is from RAVE manual.

Tried that, and there is a couple that click. Might have to disconnect each relay in turn to find the right one. Thanks anyway. Bob

Originally Posted by bee utey

I don't have data specific to the '93. The '95 has relay K119 as one in the top row, nearer to the door pillar, white/green stripe wire is the control wire to the ECU, fat white/purple wire is the main wire to the pump. Put your finger on the relay and listen to the pump when you turn on the key. When sound and feel coincide you have your baby. then double check with a multimeter that its powering with the pump. Colours should be same, I don't thimk they changed much.

BTW all the info is from RAVE manual.

Dont they have an inertia switch???
I just lean under the LH seat of my RRC and pull the switch up to cut the pump....


Sent from my mobile tellingbone using rock carvings.

Originally Posted by LOVEMYRANGIE

Dont they have an inertia switch???
I just lean under the LH seat of my RRC and pull the switch up to cut the pump....


Sent from my mobile tellingbone using rock carvings.

Havent looked for one. But will look for one tomorrow. Certainly would be an easy and effective way to stop a thief. Thanks very much. Bob

Yes, the 93 has an inertia switch LH side of the steering column between column and heater box. It is about the size of a matchbox, black plastic case, with a reset button protruding through the top. The wires (Purple/white ) going in and out interrupt the fuel pump signal after the relay terminal 87. just put a switch inline with one of them. Even if the relay gets 'jumped', the fuel pump still won't operate.

JC

Originally Posted by justinc

Yes, the 93 has an inertia switch LH side of the steering column between column and heater box. It is about the size of a matchbox, black plastic case, with a reset button protruding through the top. The wires (Purple/white ) going in and out interrupt the fuel pump signal after the relay terminal 87. just put a switch inline with one of them. Even if the relay gets 'jumped', the fuel pump still won't operate.

JC

Thanks Justin, going out now to do the job. Just the sort of info I was looking for. Bob