openinverter forum

so let's talk Lexus GS450h stock OEM electronic oil pump controller wire harness:

• Where does it come from?

• What does it look like?

• Is there a part number?

• Is is a part of a bigger harness?

• How much does it cost?

• What connector does it use?

• What relay does it use?

• What fuse does it use?

So from this:

To this:

in one long, drawn out, and ultra boring thread

as my friend says: "even a blind squirrel finds a nut sometimes" and so I did, I ended up with the transmission oil pump controller harness by accident really when I bought what Lexus refers to as the Engine Room Room Main Wire harness on eBay (but from a local dismantler in my own town, pronounced: FREE Shipping)

2007-08 Part# 82111-30K71
but goes by many other part numbers depending on vehicle features (like headlights even)

82111-30K62 fits 2008-2009
costs $7,144 new

82111-30K64 fits 2010​
costs $6,341 new

So I bought this harness really for that coveted inverter plug, laid it out in my back yard, and stared at it for a while

so there is no separate independent oil pump controller harness, it is part of the big @ss main engine room harness and needed liberating

and since I luv repurposing stock OEM connectors, fuses, and relays, I went after it all (and I have no social life)


great care was taken during the extraction process

of course I made a horrible video about this Engine Room Wire

MINI CAUTION

It appears the Oil Pump Controller can plug right in to where the Power Steering ECU would go on that main Engine Room Wire harness, so be careful not to yank the wrong section after spending hours upon hours untangling them all (ask me how I know)


ah yes I am showing you the wrong relay as well

yes this is the WRONG wire harness for the Oil Pump Controller, this one is for the Power Steering ECU

not my video but really well done showing us where the (2006-2011) Lexus GS450 heich fuses and relays live

here I drop you right to the point in the video where they show the engine compartment fuse box, the Oil Pump 60 AMP fuse is #40 and shows up on the list at around the 2:20 minute mark

Nice writeup. The easiest option is to buy a pump controller from a breaker which includes that connector and a pigtail (not uncommon as dismantlers often just cut the cables to parts). The wires can then be extended.

50A fuse and relay, I believe.

xp677 wrote: ↑Sun Jul 02, 2023 6:09 pm Nice writeup. The easiest option is to buy a pump controller from a breaker which includes that connector and a pigtail (not uncommon as dismantlers often just cut the cables to parts). The wires can then be extended.

50A fuse and relay, I believe.

thanks for your comment, do to the recent floods on the east coast in the States, wreckers are reluctant to cut off pig tails, connectors, etc. since the complete harnesses (harnessi ? lol) bring in bigger bucks, I've tried to get a 12" pig tail for a Honda Accord iBooster (electric brakes setup) and no dice

You can always buy terminals of the correct size, push them on, then fill the space with epoxy, then add your own connectors. This isn't uncommon in motorsport, where they want to use OEM parts, but want to keep their connectors consistent, or don't have access to the OEM connectors.