The Tacho in my TP SE is playing up. It seems to connect and disconnect at random. The Gregory's manual was useless. An earlier searched indicates it an electrical not cable operation. Does anyone know where and colour of the wire(s) connections I should check other than behind the cabin gauges?

Shielded grey or brown wire. It's the only shielded wire in the cluster.

Problem's usually the cluster itself, not the cabling.

I remember it being a white wire?

Anyway it's probably the gauges, grab one from a wreckers.

Anybody know if the tacho's can be re-calibrated? mine seems to read up to 500rpm too low the higher in the rev range, the worse it gets in my opinion. i'd rather have it reading right or maybe a tad higher.
eg. the other day at 100km/h in 5th gear, tacho read 1900-2000rpm.. this seems too low. i know the speedo's dead accurate, had it tested.

if it makes any difference mine isnt the digital..

Shamous69 pm if you need help getting your dash apart. i have done it before

I've got a cluster that worked last time I tested it, if you're in Victoria, it's yours.

I think the taco runs off the dissy so clean the inside of the dissy

tacho signal is from ignition coil in both EFI and carby.



White wire with gray sheilding.

Get another cluster. the tacho is probably at fault if the wire is good.

My tacho was jumping all over the place a while ago, thought it was going to be something like the wiring but it wasn't. It ended up being the ignition leads I replaced them all because the car started to run rough. After that the tacho was fine.

Thanks heaps. I have time off tomorrow to check the options of possible causes including wiring at the coil,the ignition leads and check the gauge cluster.