[T3] Fuel Pump Relay - 69 Fastback

Jim Adney jadney at vwtype3.org
Sun Jul 11 21:18:44 PDT 2021

On 11 Jul 2021 at 17:17, William Jahn wrote:

> If you just ground it connected you will kill the ECU.

No it won't. It won't care. It's an open collector on an NPN transistor to 
ground. You can ground it or not. If you connect a full 12 V to it, without any 
limiting resistance, that WILL kill it.

Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA

More information about the type3-vwtype3.org mailing list