by PARR » Fri Jul 15, 2011 12:50 am
Follow-on from my post as 'PAR' Mon Oct 18, 2010 - I decided to revert to Kms but to have a speedo face with mph round the outside with kph on the inner ring.
I found a speedo face on e-bay for £8.50 plus postage, and asked Brown's how they had done the conversion in the first place.
They had fitted a 'chip' which took the kph impulses and converted them to mph impulses and they very kindly sent me the fitting instructions for it.
On my 1999 RF2 the dashboard surround is fixed by 6 screws and a few clips - 3 across the top (the leftmost one is more of a small bolt which screws into a plug - don't lose it!), and 3 across the bottom - one above the air vents, one behind a blanking panel half-way along, and one behind the roof and window winder switches. The plugs for the switches remaining in the panel cannot be replaced wrongly - they are all different.
After this was removed there are 4 screws holding the instrument panel unit - ease it forward carefully and remove the plugs at the back (again the positions of the plugs in the harness make it impossible to get it wrong on reconnecting). The chip was found as described behind the speedo, and it was only necessary to disconnect the + and - leads and reconnect the lead which had been divided to insert the chip.
The clear front of the cluster is fitted with moulded-in clips as is the next layer - the black surround. The original speedo face is fairly thick, and as the needle of the speedo would not budge (stopping me from removing the old face), I made a fine cut with a stanley knife from the centre hole of the new face to the bottom edge and made a slot about 2 mm wide from the centre hole to the lower opening for the trip counter (the openings needed to be cut out and made a little bigger). The original fixing screws for the face were removed, the new face slipped in behind the needle and fixed with the original screws (there were 2 places on the face which needed cutting - one for the trip meter zero and the other for a small stud).
Putting the instrument panel back was straightforward - fortunately. I was very glad to find that it worked properly.
I went on to remove the old TV/satnav display, but this was more complex - there was another surround which needed removal (screws obvious) and the whole radio/tv/pocket assembly needed to be dismantled - the screws etc are pretty obvious.
Again reassembly was the reverse of the dismantling.
I now have lost the useless TV/Satnav from the dash, and have a pocket where it used to be. The opening is not DIN, but some filing and cutting allowed a DIN dash pocket (£1 on e-bay) to be a firm sliding fit (I left it proud by 1/2 an inch so as not to encroach on the radio fascia).
There were two further components for the Satnav - a CD player thing under the passenger seat and a radio-sized box under the passenger side carpet.
It just took time to disconnect these and remove the yards and yards of wire harnesses and aerial leads (aerials removed much earlier). There was one lead I was unable to remove altogether (it had been disconnected 'up top') so I just cut that one short.
I hope this helps if anyone else is planning doing their own conversion!
The chips are available on e-bay but are fairly expensive - £45 to £50.
Next job - fitting a 12V accessory socket in the hole in the off-side interior panel (where the high voltage socket is in later models).