update on "dead battery" 12-6-16

Tom Thomson 1 · Post by **Tom Thomson 1** » Wed Jan 18, 2017 8:24 pm

By utilizing an assistant and a multi-meter I finally discovered where all the electricity (1-1/2 A) is going. The ignition switch!
By pulling that fuse the draw went to 0. Now what? Is the switch partially shorted (I know it's bad mechanically, cuz the key won't come out) or is it feeding some mysterious device hidden in the bowels of the Prelude. What to do, what to do?
Tom#1

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Jan 18, 2017 9:48 pm

I would suspect something else on the circuit, rather than just the keyswitch.

Tom Thomson 1 · Post by **Tom Thomson 1** » Wed Jan 18, 2017 10:35 pm

I would too, Wurly but what might it be?
Tom#1

Post by **bluejackhustler** » Fri Jan 20, 2017 8:00 pm

Disconnect main alternator cable and retest!

Tom Thomson 1 · Post by **Tom Thomson 1** » Tue Jan 24, 2017 9:24 pm

Bluejack
OK I did that. Both the main wire and the multi connector and still have 1-1/2 A drain. The radio is some funkydoodle aftermarket thing so I pulled it out of the dash, disconnected every wire on it and put on the floor. Still got that silly amp and a half. I'm afraid to check my blood pressure.
Tom#1

Post by **bluejackhustler** » Tue Jan 24, 2017 10:55 pm

Start considering anything that has a permanent 12V even with the ingition off.
ECU, central locking, clock etc.
There can't be that much as 99% of possible causes have no feed with the ignition off.
What happens if the ignition is not being fully switched off? Check the feed to the main relay?

Lude Generation

update on "dead battery" 12-6-16

update on "dead battery" 12-6-16

Re: update on "dead battery" 12-6-16