Alfie14 Posted February 16, 2020 Author Report Posted February 16, 2020 Hi RobH Test the delay unit, it works as suggested, so next stage replace the tank sender. Thanks to the forum for all the help. Andy Quote
RobH Posted February 16, 2020 Report Posted February 16, 2020 Before you go to the extent of taking the sender out Andy, make sure first that the sender has a good earth connection. If that isn't there neither the warning lamp nor the gauge will operate so it could simply be a bad contact. Quote
DaveR Posted February 17, 2020 Report Posted February 17, 2020 There should be three leads on the sender. One for the gauge, Green/Black. One for the low fuel switch, Green/Orange. One for the earth, Black. As RobH has said if there is no earth then both the light and the gauge will not work. Having changed a tank in the TR7 in the past as far as I can remember it is not earthed itself, hence the sender must have the black lead connected to work. Dave Quote
Alfie14 Posted February 20, 2020 Author Report Posted February 20, 2020 The earth connection to the tank sender is good, having drained several gallons of petrol from the tank l have also replaced the sender unit and filled with a couple gallons. With the ignition on the low fuel warning light comes on after a few seconds but no movement on the fuel gauge which would suggest the gauge is faulty. As the gauge is longer available does anyone know if they can be repaired. Hope this is the end of this saga. Many thanks to all the forum members. Andy Quote
DaveR Posted February 21, 2020 Report Posted February 21, 2020 A quick check is too touch the gauge lead at the tank to ground the gauge should go to full. If not then problem may be the gauge or the dreaded flexible printed wiring at the back of the instrument pod. Talk to Robsport or S & S Conversions as they may have a good secondhand gauge available. Dave Quote
Paul Sanguinetti Posted March 14 Report Posted March 14 I have a little different situation. I'm replacing the gauge cluster due to some defective instruments and poor status of the on my circuite board. 1976 TR7. The old cluster didn't have a delay unit. The replacement cluster came with the delay unit, however i see no provision in my wiring harness to include it. The Green/Red appears on one small cluster connector. The Lt Green/Orange appears on the large cluster connector. Green and Black also apear on the large connector. Without cutting and splicing wires I see no way to incorporate the delay unit. Is it possible the delay unit was located in a differnent palce instead of the top/right of the cluster? Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.