'97 E300 mercedes uk

i was looking at one the other day for her father. all the info that i have from cobra, omega, dei etc. tel me that its a neg locking system. but when i tested the other day its not a neg system. anybody done one of these before. is it sigle wire vaccuum system. Why oh Why didn't i take the blue pill

Darren Power

You need 2 relays to make it work DEI alarm installation books have this detailed in them, but I recommend that you get someone with experience in euro cars to do it.WOW Sight and Sound

Maroochydore

Nothing is impossible!

Do it right the first time or don't do it at all.

i know the set up.. i just got completely thrown because every diagram says is neg triggersWhy oh Why didn't i take the blue pill

Darren Power

ok guys i went back to this one today just to have another look.. can't find wires at the pump.. the only 2 i can think of as locking wires show -10v all the time went to the switch at the dash and the only wire i get a change on is a white green.   its shows 12V- and drops a couple of volts when locking. and droppes to about 2 when unlocking   never shows + i can't find a wire that shows +12v locked and _12v unlocked for vaccum. i'm lost need some info from some one thats done oneWhy oh Why didn't i take the blue pill

Darren Power