61 replies to this topic

[LukeFranky]

Can the cruise control from another Subaru be retro fitted to a B4?

Apart from making it physically fit, will the ECU support it?

Or do I have to go aftermarket?

[duncanm]

Should be able to retrofit no problems.

 

Only the speed signal is tapped off - ECU doesn't know a cruise unit is there.

[cowie165]

Reevesy has everything you need to install cruise in your car, if that's where you're headed

[natho]

i'm curious about this too. my B4 came with aftermarket (dealer installed) cruise, and while it's all there and powers up, and lights up when you engage it, etc.  it doesn't work. i contacted the manufacturer, and they won't supply any manuals or service info - only a list of local dealers to work on it.

 

i thought i read somewhere on here that the bugeye wrx has the same components, but haven't spent any time looking into it.

 

can the cruise from another Gen3 liberty (e.g. RX) be retrofitted easily?

what about the steering wheel stalk, does this fit the momo in the b4?

is it a seperate loom, or do all the wires need to be picked out of another car?

does anyone know if a bugeye wrx is the same (i have access to a wreck that still has the factory cruise)

[Lukeoly]

I can confirm that the bugeye unit is the same as the Gen 3 one (just with a longer cable. My RX wagon had cruise from factory but the cruise cable wasn't long enough with the bugeye throttle body being on the other side I took a punt after looking at some pictures and picked up a bugeye cruise module. It plugged right in and works as expected (from memory i swapped the module into the RX bracket as the brackets were slightly different)

[TSG]

Mine had a Subaru fitted aftermarket system that worked with like an infrared remote mounted to the wheel to a purple nipple on the dash. I've seen this same system fitted to Nissan Patrol's also. It was aftermarket, kept speed well once set. But was a prick to set and adjust.

[duncanm]

I can confirm you can fit a cruise from another Gen3 in - I've got my old outback cruise on my TT swap.

Like I said -- cruise (from this era) just takes the signal from the stock speed sensor, and a safety interlock through brake and clutch switches.

There's data link and check wiring -- but you can ignore that shit.

As luke says -- actuator cable lengths vary, and you have to be a little creative where you mount the actuator and how you terminate the throttle cable.

The wiring is buried deep in the bulkhead loom -- so you're better off making a new one, unless you want to pull a loom out of a wreck and do this. I wouldn't recommend it.  You probably want to snip off the right plugs, though.

 

 

to this..

 

Attached Files

•  cruise.pdf   27.44KB   28 downloads

[LukeFranky]

So, I need to find 3GEN with cruise control and get my hands on the actuator, steering stalk and plugs. Anything else?

[duncanm]

Luke,

 

for the vacuum type:

- vacuum actuator in the engine bay

- vacuum pump in the engine bay (connected to actuator with hose)

- CC control box (left of glovebox - access by pulling glovebox out)

- stalk

- brake and clutch switches in the driver's footwell - they may be different from what you have

- plugs for everything

 

I think later models had a direct electrical actuator -- so single unit in engine bay.

 

any outback will have one - plenty in wreckers.

 

EDIT: and the dash switch

[Reevesy]

Can anyone confirm that this all that is needed for a cruise setup?

Have electric actuator
Cruise stalk
Cruise module
Cruise switch
Clutch and brake switches

[LukeFranky]

Awesome. See your inbox.

[LukeFranky]

Ok. I've got the parts andI've gone across those diagrams. I can handle wiring it up. Anyone know a good spot to tap into the speed sensor?

[LukeFranky]

Question: Does the cruise control actuator have a slope sensor? Does it matter how I position the actuator?

[duncanm]

dunno what sort of actuator you got - mine was a simple vacuum diaphragm job with a little electric vac pump.  No angle sensors or anything.

 

Speed sensor -- check through the wiring diag.. it runs around a few places. Sure to pop out of the bulkhead harness up around the cluster, or maybe the SMJ.

[LukeFranky]

It's one piece, electric I think. I'm planning to mount it in front of the battery.

I'm making up another bracket for the cable as the end length is much shorter than the end of my throttle cable. If I mounted it on the spare cable slot the throttle would be wide open!

[LukeFranky]

Oh, and the reason I ask if it has some sort of slope detection is because the actuator has a rattly ball in it, bit like a seat belt.

[duncanm]

oh - ok . maybe its some other safety feature.

 

I made up a little bracket to solve the 'end too short' problem.

 

 

[LukeFranky]

Luckily I've got the bracket from another manifold which is perfect. Bolts into the same hole just from the otherside so it gives enough reach.

[duncanm]

even betterer!

[LukeFranky]

Might have to do a write up with photos.

Planning to route all the wiring from the various parts into one spot on the passenger's side. I'll find the speed sensor wires going to the ecu and tap into them there.