Who has installed an aux gas tank in a pre 03 100?
- Thread starter Kigiin
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For the OEM subtank switch, available from trademotion.com 84560-60050 $59, possibly from CruiserDan as well, IIRC the switch is a basic switch (illuminated like the rest of OEM), it switches the fuel change over relay which switches the solenoids over to switch tanks, and also switches from the MAIN fuel pump to the SUB fuel pump located in the sub tank.
IIRC the subfuel gauge on OZ vehicles goes directly to the Combination meter or ECU and when the Combination meter/ECU sees the fuel switch pressed it swaps the gauge inputs over. This feature may not be available on your ECU (as the inputs may have been used by other things) but you can use an additional relay to swap the sender units over. Doing it this way there may be a delay in the level changing there is an inbuilt delay so the fuel level does not change when sloshing around corners etc, but I THINK this could also be overcome, certainly at start up anyway.
IIRC the subfuel gauge on OZ vehicles goes directly to the Combination meter or ECU and when the Combination meter/ECU sees the fuel switch pressed it swaps the gauge inputs over. This feature may not be available on your ECU (as the inputs may have been used by other things) but you can use an additional relay to swap the sender units over. Doing it this way there may be a delay in the level changing there is an inbuilt delay so the fuel level does not change when sloshing around corners etc, but I THINK this could also be overcome, certainly at start up anyway.
the actual aux tank switch is nothing more then a glorified spst rocker.
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- #24
The FR tank arrived yesterday, on an 18 wheeler and strapped to a crate! The install date with my trusty, local independent Porsche mechanic (always trust an independent, Porsche certified mechanic) is next Tue.
Plan on taking a lot of pics and detailing the install.
I received the install instructions from Fernando at Campinglabs prior to buying and it looked pretty straight forward. However details on the electrical wiring of the pump seemed to be lacking. I am thinking a direct wired connection to the battery would be best (not sure about fuse requirements), but would want it inoperable if the truck was off.
Any thoughts on how to wire the transfer pump and my thinking?
I also ordered an OEM sub tank switch, but it won't arrive until well after next Tue so will use the FR switch and then later figure out if and how to replace it with the OEM one.
Plan on taking a lot of pics and detailing the install.
I received the install instructions from Fernando at Campinglabs prior to buying and it looked pretty straight forward. However details on the electrical wiring of the pump seemed to be lacking. I am thinking a direct wired connection to the battery would be best (not sure about fuse requirements), but would want it inoperable if the truck was off.
Any thoughts on how to wire the transfer pump and my thinking?
I also ordered an OEM sub tank switch, but it won't arrive until well after next Tue so will use the FR switch and then later figure out if and how to replace it with the OEM one.
Your electric fuel pump shouldn't draw a lot of current (check the specs). If you want, you can wire it to the accessory plug outlet in the center console. It is fused and switched. There is a rubber grommet under the driver's side floorboard that is a good passage for wiring.
pagasis, i know this is an old thread but did you ever get the install done? pics?
Anyone know where you can buy an auxiliary Fuel tank for a series 100 (1999) here in the USA?
No. Outback Proven in Las Vegas WAS selling them, until the business shuttered.
I am in the [slow] process of making my own. I have some details that Long Range Automotive (Australia) sent me if you would like to order it yourself. PM me
I am in the [slow] process of making my own. I have some details that Long Range Automotive (Australia) sent me if you would like to order it yourself. PM me