Need Longer Gauge Wiring Harness | AEM
8 posts / 0 new
Last post
HoustonPhotog
Offline
Last seen: 5 years 3 months ago
Joined: 09/09/2014 - 06:13
Need Longer Gauge Wiring Harness

I purchased these two gauges for my 1987 VW Vanagon which is a rear engine vehicle. The supplied wiring harness (gauge to sender/sensor) is not long enough to reach from the rear engine compartment to the front dash where I want to install the gauges.

AEM 30-4401 0-100 PSI Oil or Fuel Pressure Gauge 

AEM 30-4402 100-300F Oil, Transmission or Water Temperature Gauge 

Can I extend these sender/sensor wires by splicing the harness and adding the required length of wire? Are there wiring extensions available?

Thanks.

AEM_NS
Offline
Last seen: 15 hours 28 min ago
Joined: 06/06/2014 - 09:31
Sorry but there aren't any

Sorry but there aren't any extentions available.  You shouldn't have any problems extending them as you described though.

HoustonPhotog
Offline
Last seen: 5 years 3 months ago
Joined: 09/09/2014 - 06:13
perfect! thanks...

perfect! thanks...

HoustonPhotog
Offline
Last seen: 5 years 3 months ago
Joined: 09/09/2014 - 06:13
Follow up question...

Follow up question...

Can you confirm that the Black wires on the seners below are GROUNDS?

This way I can ground them locally near the rear of the vehicle (near the sender install) and only have to run the other SIGNAL/HOT wires all the way to the front of the vehicle. This would makemy life much easier. =)

Pressure sender:
(Green, Black & Red Wires)
http://ecx.images-amazon.com/images/I/61b5-9-DJGL._SL1500_.jpg

Temp sender:
(Green & Black Wires)
http://aemelectronics.com/sites/default/files/30-2012_web_image.jpg

 

Thanks a ton for your help!
Abel

 

AEM_NS
Offline
Last seen: 15 hours 28 min ago
Joined: 06/06/2014 - 09:31
Unfortunately that won't work

Unfortunately that won't work.  Those wires are technically "sensor grounds" which is more like a 0v reference that the gauge and sensor use than an actually chassis ground like most are used to.  Extending is okay but it wouldn't be a good idea to change the connection points of any of those harnesses.

patrik.hertzog
Offline
Last seen: 2 years 8 months ago
Joined: 09/21/2017 - 11:33
I'm in the same situation as

I'm in the same situation as Abel -- I'm adding an AEM 30-4900 wideband gauge to a VW vanagon and need roughly 5 extra feet of wiring to reach the dashboard. What size wire would you recommend using? (I'll be soldering and sealing all new connections)

Thanks for your help!

Patrik

AEM_NS
Offline
Last seen: 15 hours 28 min ago
Joined: 06/06/2014 - 09:31
When I've had to extend a

When I've had to extend a UEGO harness I've gotten a second harness, cut off the gauge side connector from one and the sensor side connector from the other and then mated them together with a 6 pin DTM connector. I've seen soldered in extensions not work before. Keep the sensor harness as short as possible on the 4900. The sensor connector on the gauge limits the wire gauge to 22g and adding more length to the harness can be problematic.

patrik.hertzog
Offline
Last seen: 2 years 8 months ago
Joined: 09/21/2017 - 11:33
Ok great, that's exactly what

Ok great, that's exactly what I'll do. Thanks so much for your advice!