I just added an electric fuel pump to my WVO set up...

What are y'all using as a power source for elec fuel pumps?

right now the power wire is just running through the interior, over the seats and too the dash. I tapped into the cigarette lighter for power.

I would like to use a power source in the rear of the car.

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

I think the trunk light has power all the time. You'd have to add a switch, and still run wires to your dash. When I wire these systems up, I fuse it all separately, to minimize problems with the original wiring.

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'83 240D with 617.952 and 2.88
'01 VW Beetle TDI
'05 Jeep Liberty CRD
'89 Toyota 4x4, needs 2L-T
'78 280Z with L28ET - 12.86@110
Oil Burner Kartel #35

http://i16.photobucket.com/albums/b1...oD/bioclip.jpg

I need a power source that has constant 12v power only when the ignition key is on.

__________________
1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

There is an ignition switch powered wire that hooks up to the radio, but your asking for trouble if you use an existing power source without running it through a relay and fuse

I found a good source...

I tapped into the rear defroster circuit. It is a 20 or 25 amp circuit. On the wagons it was right above the tailgate.

I removed the trim panel that holds the rear dome light. There was a nice terminal block with several wires. I found the main power wire and just used a crimp conector with the round "O" on the end and screwed it to the terminal block.

I ran the wire along the roof and down behind the right rear pillar trim and into the first aid kit compartment, slid the wire out thru the fuel tank filler tube gasket and out to the pump.

I have a 10 amp fuse holder and toggle switch in the first aid compartment for easy access. I can replace the fuse in 30 seconds. If I'm out of WVO I can turn off the pump and the OEM tank feeds diesel thru the unheated OEM fuel line by default. Turn the pump back on for WVO blends and the HIH fuel line is now primary fuel line again again.

__________________
1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5