do not patch into the blue wire on the harness under the carpet at the pump module. the positive lead to the pump is a Black/White wire.

i ran into a problem with the install i recently did where i ran the supply to the pump to that blue wire, if you leave the other wires as is the circuit opening relay will still trigger the pump for a few seconds while cranking, enough to start the engine and if you richen up the mixture enough you can actually get the car to idle and open up with 0 fuel pressure (vacuum through the injectors can pull fuel from the tank) and cause headaches in trying to find the cause of a severe hesitation when opening the throttle and extremely tough to tune idle map.

the blue wire they reference is a short blue wire from that black/white lead to the pump...

i hope with this no one else will run into this issue.

BTW, whoever did the wiring schematics for Haynes can blow me!

 

Why didn't yyou simply remcommend a safe place to hook it up???

I'm presently looking for a nice spot.

help me please
l-p

 

the best way imo is to run a new wire the whole length to the pump and patch it in in the hatch area.

you have to remember the wiring in the car is a decade and a half old.

 

well I figured out this way...

But I was too lazy to remove seats, carpets and **** like that...

Seems I'll have to do it the right way :P

Thanks Karack!!!

 

Good info Karack! I wound up running a whole new wire straight off the battery, through the relay to the pump. Very simple....hardest part is removing the interior pieces but I think it's worth it.
-John

 

-Double post.

 

To run a new wire is really simple. It was a 10 min. job on my RHD FC3S. You don't need to remove the seats, just run the wire under the carpet and protect it with something.

REgards
Iwan