TVR Griffith Courtesy Light Schematic
This information has been gathered from personal experience and is believed to be accurate but there is no guarantee that this is the case. Anyone using this information does so on the understanding that its use is completely at their own risk and that no liability for errors or omissions or consequential damage to persons or possessions will be accepted by the author or his agents. Prospective users should make their own considered judgement or seek specialist advice as to the accuracy or otherwise of any statements made before using this information in anyway.
The Courtesy light relay is known to be a source of current leakage that in extreme conditions can completely discharge your battery. Many owners including myself have unplugged the relay (MO839) that is usually found at the top right hand of the relay//fuse panel. With the relay unplugged the courtesy light will now only operate by manually switching it on using the two way switch on the light itself.
The relay is not simply an electromechanical device but incorporates an electronic circuit that introduces a time delay when closing a door or switching on the ignition and may or may not fade the light out.
On investigation it became apparent that a simple shorting link could restore a simplified arrangement that switches on the light when ever a door is opened.
The Courtesy light relay is known to be a source of current leakage that in extreme conditions can completely discharge your battery. Many owners including myself have unplugged the relay (MO839) that is usually found at the top right hand of the relay//fuse panel. With the relay unplugged the courtesy light will now only operate by manually switching it on using the two way switch on the light itself.
The relay is not simply an electromechanical device but incorporates an electronic circuit that introduces a time delay when closing a door or switching on the ignition and may or may not fade the light out.
On investigation it became apparent that a simple shorting link could restore a simplified arrangement that switches on the light when ever a door is opened.
The relay base is shown above as viewed in the fuse/relay panel. This is the arrangement on my 1996 Griffith 500 but this could be different on your car so please check:
- Check that +12 volts is present on the left hand pin with the ignition on.
- Check that the top pin has +12 volts permanently.
- Check that the bottom pin is at 0 Volts (earthed)
- Check that the right hand pin is earthed when either door is opened, with both doors closed there should be no reading
- Finally check that the second pin from the left connects to the courtesy light, the original relay sends 0 volts (earth) to the light to operate it provided that the courtesy light switch is in the correct position.