hi guys

new to the forum with my 1990 4.0 litre sovereign.
i ve had to buy a new alarm for my 40, but cant seem to
find an answer to one issue. it unlocks and locks the car on arm and dis-arm, but i cant find something out.
can anyone tell me please, if the central locking on these cars, is
positive trigger
negative trigger
positive/negative trigger
if i ve read the book of lies correct, it looks like pos/neg
trigger to me, but i m not an auto electrician, so may well be
wrong!
thanks in advance.

happy to post photos once i figure out how!

 

Welcome to the forum XJ40-MARK,

This is the right place for tech questions about your XJ40. I've deleted your duplicate post from General Tech Help section.

When you get a minute, please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST section and post some info about youself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham