After market Sat/Nav

[ludwig987]

I have an aftermarket Sat/Nav, the Eclipse AVN 5435, in my 2005 Boxster. According to the dealer it needs to plug into my variable speed sensor or VSS. Problem is no one seems to know where the plug is. :help:

[markhit]

I have an aftermarket Sat/Nav, the Eclipse AVN 5435, in my 2005 Boxster. According to the dealer it needs to plug into my variable speed sensor or VSS. Problem is no one seems to know where the plug is. :help:

I'm pretty sure it's Vehicle Speed Sensor. Most Boxsters have a VSS signal running to the radio. It's a Grey and Pink colored wire.

Failing this pin 18 at the soft top relay also has the signal going to it.

Your nav will have to have a learning feature otherwise you need to determine what the pulses per mile rate is and run an adapter if too far out.

I have a nav I want to put in that doesn't have this learning function and I can't find out what the PPM rate for Porsches is, so until I can find out I'm screwed.

[Loren]

I have an aftermarket Sat/Nav, the Eclipse AVN 5435, in my 2005 Boxster. According to the dealer it needs to plug into my variable speed sensor or VSS. Problem is no one seems to know where the plug is. :help:

I'm pretty sure it's Vehicle Speed Sensor. Most Boxsters have a VSS signal running to the radio. It's a Grey and Pink colored wire.

Failing this pin 18 at the soft top relay also has the signal going to it.

Your nav will have to have a learning feature otherwise you need to determine what the pulses per mile rate is and run an adapter if too far out.

I have a nav I want to put in that doesn't have this learning function and I can't find out what the PPM rate for Porsches is, so until I can find out I'm screwed.

I don't think so. On a MY05 987 all of that stuff is on the MOST/CAN fiber optic network. I don't see an external speed signal anymore in the schematics.

[markhit]

I don't think so. On a MY05 987 all of that stuff is on the MOST/CAN fiber optic network. I don't see an external speed signal anymore in the schematics.

I'm sorry, I didn't realise it was a 987, but his username would have given me a clue, hey?

[ludwig987]

I don't think so. On a MY05 987 all of that stuff is on the MOST/CAN fiber optic network. I don't see an external speed signal anymore in the schematics.

I'm sorry, I didn't realise it was a 987, but his username would have given me a clue, hey?

Any ideas? Would the dealership have an option? Or is this a lost cause?

[Loren]

We need to get some members that really know their electronics (like Sandy) to have a look at the schematics - because I don't see a way. All the key connections are on the fiber optic bus now - so ether the 3rd party Nav providers need to catch up or one of local electronic genius's needs to help us out here.

[ludwig987]

We need to get some members that really know their electronics (like Sandy) to have a look at the schematics - because I don't see a way. All the key connections are on the fiber optic bus now - so ether the 3rd party Nav providers need to catch up or one of local electronic genius's needs to help us out here.

Well I found an answer. Alpine makes a Vehical Speed Sensor that can be mounted on a wheel and plugged into the reciever. Part number alpnvek300. I'm trying to get a quote on the part and cost of installation.