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Matt, Engineer
Category: Australia Car
Satisfied Customers: 20378
Experience:  Automotive Engineer for 20 years, BEng hons degree,
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Im looking to put a 300tdi in a series 3 swb i want to pu, i

Customer Question

im looking to put a 300tdi in a series 3 swb i want to pu
JA: What is the make/model/year of your car?
Customer: i want to put the discovery speado in it i need to know what each wire does coming out the back and what colours they r for each wire
JA: What year is your Discovery?
Customer: my car is a 1978 series 3 im not sure about the discovery unit that im using
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: im trying to find out the wireing before i put it in
JA: Anything else you think the mechanic should know?
Customer: im going to put an auto behind the 300tdi
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mechanic about your situation and then connect you two.
Submitted: 4 months ago.
Category: Australia Car
Expert:  Matt replied 4 months ago.


using a discovery speedo is going to be tricky as its driven from the body control module that also runs many of the other car functions including the security system, windows etc

and typically the BCM needs to see communication between the ECU and security module for it to function

how were you planning on running the engine?

transplanting the ECU and wiring harness from the discovery too?

as again you'll have issues in disarming the secuity system

what may be better is to use an aftermarket ECU to control the engine and rely on the original wiring harness to run the rest of the car

try this firm


Expert:  Matt replied 4 months ago.


do you still need help?

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