coz apparently the 90spec wiring to the clocks is on a differnet layout or sumit and the fuel gauge will register ok from full to 1/2 a tank then it all goes pear shaped and it gets a bit erratic after that most of the time registering way below the red .................................................. ...... ive ran out of fuel on more than one occaison trying to guess how many miles i got left in the tank

Soon as i plugged the 88 spec clocks in all was fixed