View Full Version : inertia switch and dual fpdms
BigM460
02-03-2015, 12:08 PM
What is the best way to wire in the inertia switch to keep its function while wiring in the dual fpdm's? All the wiring diagrams I've found, don't seem to incorporate it.
Can I just run the dark green/yellow stripe wire through the inertia switch then to the fpdm?
Loco1234
02-03-2015, 03:20 PM
Wire it same as stock but install the 2nd FPDM in parrallel with the first FPDM...
I have been running this way for years... I also upgraded the Wire sizes that power the Fuel pumps & relocated battery to trunk which allows for a new larger main power feed from the battery (fused)
BigM460
02-03-2015, 04:13 PM
Wire it same as stock but install the 2nd FPDM in parrallel with the first FPDM...
I have been running this way for years... I also upgraded the Wire sizes that power the Fuel pumps & relocated battery to trunk which allows for a new larger main power feed from the battery (fused)
Looks like the power wire goes through the inertia switch stock. Have run a BIG wire to trunk, have installed 2 circuit breakers, 2 relays, and 10 gauge wire, but that bypasses the stock power feed. Wondering about a way to use it without having to run the power for both pumps through the inertia switch?
RacerX
02-03-2015, 04:35 PM
The inertia switch should be used to turn on the relay that you have the large wire from the + on battery going to. Energizes once the key is turned, switches off if the inertia switch trips.
BigM460
02-03-2015, 05:06 PM
The inertia switch should be used to turn on the relay that you have the large wire from the + on battery going to. Energizes once the key is turned, switches off if the inertia switch trips.
I'm seeing that now. Was looking at a pinout of the fpdm plug, and wasn't following. It's showing CCRM power and it being the dark green w/yellow stripe.
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