Vauxhall Zafira A (1999 - 2005) - 1999 1.8 auto g'box interlock / brake lights

Honest John Back Room » Technical matters
View Threaded
Wed 24 Dec 2008 18:48
1999 1.8 auto g'box interlock / brake lights - MarkH2
Our W-reg Zafira MkI Auto has had a problem disengaging from Drive. As a temporary fix a local garage disconnected the interlock solenoid but I found out today that now the brake lights don't work! This is a major problem as we need to use the car over the Christmas holiday and we want to be legal. Any help how to get the brake lights working again gratefully received. I am a professional engineer so should be able to rig something up if someone can tell me what I need to do.
Also if anyone can point me to a wiring diagram (e.g. pdf) that would be fab.
Reply | Report as offensive | Link
Wed 24 Dec 2008 19:21
1999 1.8 auto g'box interlock / brake lights - topbloke
stupid question but all the bulbs have not blown all at the same time or within a short period of time i can sort some wiring out but wont be a pdf what exactly do you need
Reply | Report as offensive | Link
Sat 27 Dec 2008 14:16
1999 1.8 auto g'box interlock / brake lights - MarkH2
I checked the voltage at the bulbs. When the brake pedal is pressed it goes to about 0.2V - so the switch is doing something it's just not getting the full voltage to the bulbs.
Curiouser and curiouser....
Reply | Report as offensive | Link
Sat 27 Dec 2008 21:21
1999 1.8 auto g'box interlock / brake lights - Dynamic Dave
Have you tried simulating what the switch does (ie, joining the wires together) to see if the brake lights come on?
Reply | Report as offensive | Link
Mon 29 Dec 2008 10:46
1999 1.8 auto g'box interlock / brake lights - topbloke
would appear that the switch is u/s try the above trick see if the lights are on if so its the switch if not its wireing/fuse issue there are/should be four wires black should be live from fuse,black and yellow go's eventually to the bulb via the autobox ecu,cruise control etc
Reply | Report as offensive | Link

From which small car to buy at which price point to the best UK-built cars, our Top 10s have the lot. Click now for your shortlist.

Unsure of what to buy? Our Top 10s are here to help you....

From economical vans to those that have the largest payloads, we have a shortlist for everyone - click to find out which will suit your needs.

Undecided on which van to buy? Our Top 10 shortlists can help...