ABF & ITB's & Emerald into mk1. wiring tacho,coil pack,fuel pumps

best to get a k-jet fuel pump relay, then itm will cut out safely if you have a crash, what fusebox is it, early ceramic or late blade? (see fusebox faq)

 

yeah run em both from same relay. you have 2 choices here, either get a vag spare relay holder and fit it above the fusebox, or use factory relay slot and add the 1 pin for the fuel pumps to the E plug.

for option 1 you need to add ign live, live, rev counter feed and earth feeds to a relay holder, then pop a factory vag k-jet relay to it.

for option 2 you need to find a donor loom and chop out a large round pin, this you then pop into plug E and join your pumps live wire to it. earth to claw above fusebox, then pop in vag k-jet relay, job done.

 

E plug on the back of the fusebox, see my fusebox faq for more info, you're looking at pre-90 mk2 section 'CE1'

if go for option 2, ign live and permanent live is easy as there are a fair few spades round the back. coil live more tricky, this comes from the coil -ve, red/black wire.

I might have the pin you need kicking about in my various wiring loom offcuts boxes? then all you would need to do is unplug E then pop the pin in.

 

that relay is for cars with an ecu, you need this one from GSF:
935VG0090 k-jet relay without limiter 23.20

if you check out this here piccy of the back:


you have 2 rows of spades labelled G and P. P are permanent live, G are ignition and other accessory live feeds. E is the rear wiring loom plug. so basically have 2 choices, rus 2 spades to rear of fusebox and splice to the coil -ve wire, or run 1 pin to rear of the fusebox

Actually, theres a 3rd option, see the spade labled 'N'? Thats also fuel pump live output, the only issue is it is not fused. If you run your pump wire there with an inline fuse all you'll have to do is pop the k-jet relay in the right slot and thats it! only trouble is spade N is larger than the average spade, but you can get them easily enough I think even halfords sells em the right size. Plenty of ways to do it, your call

 

nope not the right one im afraid! the one you want is 321 906 059G I think. or just buy the gsf one

what management are you running actually?

 

emerald probably has some kind of fuel pump relay trigger built in? if so you can use a cheaper mk2 digi/16v mk3 relay instead. still need a bit of wiring though, whereas the k-jet one will be pretty much plug n play

 

2 options, either rig up a relay holder as you say, or add a wire from ecu pin 20 to fusebox pin D/13. the good news is since the car was a carby there is a wire there, its a purple/black for the carb thermal switches

chop the wire and splice in, remove the carb heater relay from slot 2 and fit a 67, 80 or 167 MK2 digi/16v or any mk3 petrol fuel pump relay

 

cool, another thing is if you have fitted another engine loom, you can use a sharp knife to chop out one of the pins from your old loom, then solder this to your emerald trigger wire and pop it into the D plug. helpfully the pins are all numbered on the front of the plug